mixbench / usb-powered dj-style filter / 0 HP ⇣ MIXBENCH is a true 0HP Eurorack mixer with USB power, three stereo channels, TIlt-EQ per channel and a high-pass filter on the main output.. Its compact design fits perfectly between modular cabinets or desktop synthesizers, making it an invaluable addition to your performance-oriented live setup. key features 3-Channel Mixer Tilt-EQ per Channel High-Pass Filter Fader for Channel A & B ​ documents ​ Mute Switches Gain +20dB USB-Power description / manual On top of the panel there are three stereo inputs A, B and ST and a stereo output OUT. All three inputs have a dedicated Volume potentiometer. The inputs A and B can be mixed with the FADE knob on the very bottom. If you turn the knob fully counter-clockwise only channel A will be forwarded to the output. Consequently if you turn the knob fully clockwise only channel B will be audible. At 12 o´clock you can hear an even mix between both inputs A and B. The ST input is not affected by the FADE knob and will be directly routed to the output if you turn the VOLUME ST pot clockwise. ​ Channels A and B have a MUTE switch in order to instantly switch off each channel´s signal. There is no mute switch for channel ST. ​ EQ A and EQ B will change the frequencies of each channel A and B. It will boost high frequencies and cut low frequencies turning the knob clockwise and boost low frequencies and cut high frequencies turning it counter-clockwise. There is no EQ for channel ST. ​ All three channels are routed through a HIGH PASS FILTER. The frequency of the filter can be adjusted with the HP FILTER knob. The frequency range and resonance of the filter can be set using trimmers on the bottom of the module. ​ MIXBENCH is a space saving DJ-style mixer that was mainly designed to mix two Eurorack cases in a live situation. You can of course also use it to mix your drum-machines or synths. ​ MIXBENCH is powered by standard USB power (+5V) and is fully compatible with your Eurorack system. You can choose to power it with a Mini B, Micro B or Type C USB cable. You can solder all USB connect or just one of them, if you have a favourite USB cable you want to use. Up

ALL MODULES AT A GLANCE Whether it's the 3U Eurorack, 1U Eurorack, desktop synthesizer, music tools, or discontinued devices – this page showcases all the module designs by ST Modular. oscillators filter & eq sequencer st case (3dp) modulation & random effects mixer & vca utilities & psu 1U format blank panels zero hp euphoria midi thru cv bench workbench mixbench hum protector discontinued oscillators oberhausen eurokastle honeyeater alstaden chiasso V2 trommelmaschine cyllene klangmaschine give V2 pyxis boba fat drum hh radio kau'i yaksha´s fate ⇡ filter & eq natural state efi stereo eq envoltura ​ rocinante´s gate werner dirty dan karl 3xEQ franz ⇡ sequencer chasing lights push shikensa serial flitzem deför isi wren path hapha ⇡ modulation & random influencer envoltura cion wave slopes lfot lfor clanches envelope tryfelo 2xlfo adsr yace good & evil tricay catch ⇡ effects clipping cat inaki emoo gritzner reverb buff stereo comp delay singer diz ⇡ mixer & vca sum mix & pan stereo sum duck feed sum v2 vca send stm μsum scva phoebe spm fay v2 mia matrico ⇡ utilities & psu pae sl pedal pal usb da pow! pedal pal stereo stereo total switched cause & effect uit once in a while two sides toolbox mult cv scan ⇡ 1u format lange anna & anna´s langer arm ap cause & effect mia slide toolbox ⇡ blank panels 1 HP 2 HP 4 HP 8 HP ⇡ st cases small ⇡ ZERO HP is a series of ST Modular devices that are not mounted in a Eurorack case. They don't take up precious HP and can be placed on your desk to expand your Eurorack or synthesizer setup. Some are USB-powered and some are passive, like the much appreciated WORKMATES. workmates pix combiner touch swap clipping cat lpg split trs switch eq attenuator ⇡ midi thru ⇡ cv bench ⇡ hum protector ⇡ workbench ⇡ mixbench Up

send / aux send & return / 8 HP ⇣ SEND serves as an excellent performance tool, enabling direct interaction with external effects affecting your sounds. 1/3 key features 2x AUX Send & Return 2x Tone Control Input Level Attenuator LED Indication Wrong polarity protection specs & downloads width: 8 HP depth: 35 mm power: 25 mA @ +12V / 15 mA @ -12V documentation videos description / manual SEND is a send and return unit you may know from ordinary mixers. It has a mono INPUT with a LEVEL attenuator and any signal fed in is sent directly to the stereo outputs OUT L and OUT R. If you turn SEND A to the right, you can adjust the portion of the signal that is sent to the SEND A output.This can then be fed into an external effect and returned in mono or stereo to the upper RETURN (L) and RETURN (R) inputs. The TONE potentiometer accentuates either low (turn to the left) or high frequencies (turn to the right) of the signal routed to the send output. Leave it in the centre position so that the frequencies are not affected. The same applies to SEND B, the lower inputs RETURN (L) and RETURN (R) and the corresponding potentiometers SEND B and TONE. Both send s can be used simultaneously. Two LEDs indicate if a signal is sent to the send output. Gain trimmers are located on the front panel to adjust the gain of the send signal. prev Up next

mix & pan / 4-channel mixer with vca, cv pan, and cv scan. / 18 HP ⇣ This module is great for creating ever-changing and organic soundscapes throughout the complete stereo field, making your composition a very varied and a persistently interesting listening experience. 1/4 key features 4-Channel Mixer 4x VCA 4x CV PAN CV SCAN CV SPAN Volume Slide Pots Wrong Polarity Protection ​ specs & downloads width: 18 HP depth: 55 mm power: 92 mA @ +12V / 78 mA @ -12V documentation videos description / manual MIX & PAN completes the ST Modular SUM mixer series with a fully CV-controlled 4-channel mixer. It features CV PAN, VCA per channel and a CV CHANNEL SCANNER. Each channel has a VOLUME SLIDER and a VOL CV input to control the internal VCA. The panning per channelcan be adjusted with the PAN controls or the PAN CV inputs. LEDs indicate the channel volume and the stateof the panning. All channels are sum med and can be tapped at the main output jack. The SCAN and SPAN functions are really the most outstanding features of the module. They provide a unique way to mix 1 to 4 channels using one or two CV signals applied to the SCAN and/or SPAN CV inputs. The scan functionality allows you to output a selection of channels by turning the SCAN knob or applying CV to the SCAN input. The range of channels that are activated is set manually or by CV using the SPAN knob. This not only narrows down the active channels from all to just one, but also reduces the effect the SCAN CV hason the VCAs, as if you were shortening their decay time. When both SCAN and PAN are in the centre position and you turn SCAN, you activate one of the four channels at a time. If you increase SPAN, more of the adjacent channels become audible until all channels have reached maximum volume (from mid to cw position). If you decrease SPAN again, only one scanned channel will be audible (mid position) and it will then start to fade out shorter (turning from mid to ccw position). If a CV signal is present at the SCAN CV input and you turn SCAN to the left, the activated channels are narrowed to the left. Conversely, if you turn the knob to the right, only channels 3 and 4 are activated, and in the rightmost position, only channel 4. All CV inputs also accept audio signals, and it is quite interesting to control them with CVs that transition seamlessly from low frequencies to audio rates. SUM MIX&PAN QUICK START GUIDE: SUM_MIX_AND_PAN_QUICK_START .pdf Download PDF • 833KB prev Up next

drum / digital drum module / 3 HP ⇣ DRUM is an excerpt of the Mutable Instruments PEAKS module. It was reduced to the max and only focuses on the 808 and FM Drum algorithms. 1/3 key features Digital Drum Module Two Modes: 808 & FM Manual and CV Trigger HP friendly Flip Panel with Descriptions for each Mode Based on the MI Peaks Algorithms Wrong Polarity Protection specs & downloads width: 3 HP depth: 65 mm power: 60 mA @ +12V / 2 mA @ -12V documentation videos description / manual There are two modes to be selected via a push button on the PCB: ​ 808 DrumThis is an emulation of the well-known 808 kick drum. You have manual control over the FREQUENCY, PITCH ENVELOPE, TRANSIENT and DECAY. ​ FM DrumThis is a digital drum synth based on FM synthesis. By turning the knobs you can change the FREQUENCY, FM AMOUNT, DECAY and COLOR of the drum sound. ​ DRUM has an internal EQ that allows you to adjust the amount of bass applied to the signal using a trimmer on the PCB. This module also has a flip panel with descriptions per mode on each side. Both modes share a manual TRIG button to execute the drum sound, a TRIGGER INPUT and a signal OUTPUT. Released under cc-by-sa-3.0 license: ​ Pichenettes Mutable Instruments prev Up next

cv expert / dual polarizer, offset & gain with LFO / 4 HP ⇣ CV EXPERT is a very compact yet powerful CV tool that is equipped with all the important functions you need to customise your control voltages. With its internal LFO, it is immediately ready for use without further patching. 1/3 key features 2x Polarizer 2x Offset 2x Gain Triangle or Square Wave LFO Internal normalizations Low HP format Skiff friendly Wrong polarity protection ​ specs & downloads width: 4 HP depth: 30 mm power: 50 mA @ +12V / 32 mA @ -12V documentation videos description / manual CV Expert (Cve) is a versatile dual-channel tool for customizing control voltages. Its internal LFO is normalised to both inputs and allows you to choose between a triangle or square wave via a jumper on the back. The LFO connection is automatically interrupted when an external CV is inserted. Adjust the LFO rate with the LFO RATE potentiometer. The signal received at the DC-coupled inputs IN ① and IN ② passes through three CV tools: Polarizer The PLRZR potentiometer enables voltage attenuation and inversion. At the midpoint, the signal is eliminated. Turning to the right allows the original voltage to pass through (as with an attenuator). Turning to the left inverts the signal, e.g. positive signals are converted into negative signals. Offset Adds or subtracts voltage from/to the passing signal. OFFSET control determines the offset range. In the center position, there is no voltage offset. Turning the control to the right shifts the voltage to the positive range, while turning it to the left shifts it to the negative range. Gain Amplifies the signal with a maximum gain of 2 at the GAIN control's maximum position, effectively doubling the applied voltage (e.g., +1V becomes +2V, +3V becomes +6V, or +4V becomes +8V). The voltage is capped at a maximum of +/-10V. CV EXPERT QUICK START GUIDE: CVE_QUICK_START .pdf Download PDF • 422KB prev Up next

singer / feature-rich delay with extensive parameters / 8 HP ⇣ Probably SINGER is one of the best equipped DIY PT2399 Delays available. It is the consequence of years of development of other delay effects such as DELAY V2 and GRITZNER and now combines new and old functions in one module. Why another PT2399 Delay? Well, because the PT2399 is a very special kind of delay with its own and very unique character we all love and we want CV control over most parameters. In contrast to DELAY V2 and GRITZNER, SINGER was made to explore the boundaries of the PT2399 chip and is able to create all sorts of crazy delay, glitch and noise sounds. It is rather specialized on short delay times, but can create some really nice delay and feedback craziness. 1/4 key features Analog Delay CV Control over most Parameters Two Inputs Internal LFO WET Output Wrong polarity protection ​ specs & downloads width: 8 HP depth: 45 mm power: 95 mA @ +12V / 45 mA @ -12V documentation videos description / manual SINGER has two audio inputs IN A and IN B, whereas IN B includes a high pass filter that attenuates frequencies below 320Hz. Especially for effect sends it is helpful to only introduce a high pass filtered delay effect to the mix. You can switch between IN A and IN B by using the A/B switch (switch MAN / LFO set to MAN) or by introducing a CV gate signal to the A/B GATE input jack. When the CV gate signal is high, only IN B will be routed to the delay circuitry indicated by the IN B LED. It is also possible to switch between both inputs using the internal LFO (switch MAN / LFO set to LFO). This way you can create some really unique delay cascades using two different audio signals. The DELAY TIME can be changed with the large DLY TME knob. The range is set to be too large for the PT2399 chip to handle. Consequently turning the knob from 2 o´clock on clockwise will create crazy glitches and noise artifacts. Cleaner delay times can be achieved by settings from 7 to 12 o´clock. The delay time can be changed via CV at the TIME CV input jack. A dedicated DLY CV attenuator let´s you decrease the amount of CV that is being applied. Additionally an internal LFO can control delay time if nothing is patched into the TIME CV jack and the DLY CV knob is turned to the right. The LFO rate can be set with the LFO RATE potentiometer and the LFO cycle can be reset by a CV gate or trigger signal that is patched to the LFO RESET input jack. You may choose to use a triangle or square wave LFO with the help of the TRI/SQU switch. The LFO is normalized to delay rate and feedback via the dedicated attenuators if nothing is patched to the corresponding CV input jacks. The LFO rate LED only indicates LFO waves controlling delay rates after attenuation. The LFO is also normalized to the A/B input switch if the MAN / LFO switch is set to LFO. A DRY/WET potentiometer sets the amount of delay effect that is applied to the OUT jack. On top the level of the wet signal can be changed with the IN attenuator. Hence if the DRY/WET pot is fully clockwise and the IN attenuator is fully counter-clockwise, no signal is audible at the OUT jack. FEEDBACK may be changed with the help of the FEEDBACK knob and can also be controlled via CV at the FDBK CV jack and the dedicated FDBK CV attenuator. If nothing is patched to the FDBK CV jack you can also route the internal LFO to control the feedback amount if you turn the FDBK CV attenuator to the right. VCA CV provides the opportunity to control the level of amplification of the wet signal via control voltages such as an envelope or an LFO. The WET output supplies the pure delay signal at any time. SINGER QUICK START GUIDE: SINGER_QUICK_START .pdf Download PDF • 741KB prev Up next

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reverb / short reverb / 4 HP ⇣ Reverb is a very simple 4HP Reverb module based on the Accutronics Digi-Log- Reverb BTDR-2H. 1/3 key features 2 to 2.85 Seconds Reverb Time depending on the BTDR Type Tone Control “OSC” Switch for Feedback Loops “Depth” Reverb Size Control Wrong Polarity Protection ​ specs & downloads width: 4 HP depth: 55 mm power: 65 mA @ +12V / 0 mA @ -12V documentation videos description / manual The unit features typical Reverb Amount and Feedback controls, along with an extra Tone knob to adjust the input audio's frequency for the reverb. Furthermore, an OSC toggle activates a reverb signal feedback loop, while the Depth setting can be likened to a "cathedral" switch, expanding the reverb's expanse. This straightforward design produces concise reverberations along with abundant noise and captivating feedback chaos. prev Up next

"Krakong fits seamlessly into a series of well-known generative or percussion-orientated synthesizers such as Moog's DFAM, Rob Hordijk's Benjolin or Lorre Mill's Double Knot. It sounds incredible and it's hard to describe how much fun it is. I could play around with it for hours and it keeps surprising me with new sounds and sequences." MAIN FEATURES KRAKONG is a duophonic generative synthesizer with a sequencer per voice, FM crossover modulation, an additional random modulation sequencer, one multimode filter with VCA, a buffered multiple and a resettable LFO. The design includes a collection of manual controls and connections for patching and CV control. Each of the unit's two voices consists of a triangle and a square wave oscillator, a shift register sequencer, a decay envelope generator and a filter-based gate. In addition to the two synthesizer voices, which can be manually distributed in the stereo field, a third ring-modulated output of the two voices can be mixed to the main output. The tempo of all sequencers is determined by a clock generator, which can be controlled internally or synchronised externally to any voltage (audio and CV). This musical instrument has a complete structure that allows for a wide range of sonic possibilities, from rhythmic drum patterns and tamed sonic chaos to textural and rough synth-sounds. The essence of this unit lies in the exploration of the interplay between the elements of the synthesiser, using the three sequencers and filters, manual controls and modulation patch points. INPUTS, OUTPUTS & FEATURES 2 Oscillators 1 Ring-modulated Output of the two Oscillators 1 CV OSC FM Cross-Modulation 2 CV Filter-based Gates 2 CV Decay Envelope Generators 1 CV Multi-mode Filter with two External Inputs and VCA 1 Noise Output 2 Shift Register Sequencers 1 Random Modulation Sequencer 1 CV Clock Generator 1 Resettable LFO 1 Buffered Multiple with Inverted Output 1 Mixer with stereo distribution (panning) ​ OSC I and OSC II PULSE – Output of the PULSE waveform TRIANGLE – Output of the TRIANGLE waveform RNDM – Amount of random modulation of the RNDM SEQ applied to the oscillator´s frequency. FREQ – Manual control of the oscillators´s frequency. FREQ CV Input – CV frequency input with attenuator. The oscillators don´t track exactly 1V/Oct. The MOD´s square wave output is normalized to the OSC I CV input. The MOD´s triangle wave output is normalized to the OSC II CV input. ​ NOISE OUT – Output of the internal NOISE GENERATOR ​ GATE (OSC I & OSC II) IN – Audio input. The oscillator´s TRIANGLE output is normalized to this input. RNDM - Amount of random modulation of the RNDM SEQ applied to filter. This knob also acts as a attenuator for the GATE CV input. CV – CV input for the GATE cutoff. The RNDM SEQ CV output is normalized to this input. OFFSET – GATE cutoff offset FORCE – Amount of DECAY CV applied to the GATE Resonance of the OSC gates can be adjusted via a trimmer on the PCB ​ DECAY (OSC I & OSC II) TRIG – CV input for triggering the DECAY envelope. The SERIAL SEQ TRIG output is normalized to this input. DEC OUT – DECAY output (OSC I Decay output can be set to inverted via jumper on the PCB) CV – CV DECAY input with attenuator. The RNDM SEQ CV output is normalized to this input. DECAY – Manual control of the DECAY length ​ SERIAL SEQ (OSC I & OSC II) CLK IN – Sequencer clock input. The CLOCK GENERATOR´s output is normalized to this input. CLK DIV – The normalized CLOCK GENERATOR input can be divided by 2 or 8 (selectable via jumper on PCB). CV IN – Changes the locked note per clock according to an incoming CV signal. This signal is mixed with an internal noise source that generally generates random notes for the sequencer. GATE OUTPUT – Random or looped GATES CV OUT – Random or looped PITCH CV generated from a noise and CV input source. SCALE – Range of the pitch of CV OUT LENGTH – Select the length of a SEQUENCE. You can choose 4, 5, 6 or 7 (selectable via jumper on the PCB) or 8 steps. Please note that a change of the sequence length might also change the notes that are locked per clock signal, even in LOOP mode. LENGTH CV – CV control for selecting the sequence length RNDM/LOOP – Button to LOOP a sequence. If it is not looped it will generate random notes and gates. ADD – When pressed simultaneously with a CLOCK signal, it adds a random note and gate to the sequence. DEL – When pressed simultaneously with a CLOCK signal, it deletes a note and gate from the sequence. ​ MOD (Resettable LFO) MOD KNOB – Manual control of the LFO RATE MOD RATE – Changes the RANGE of the LFO RATE from fast to slow. RST IN – Resets the LFO cycle on an incoming trigger signal. ​ MULT (1 to 3 Buffered Multiple) IN – Multiple input. The MOD triangle waveform is normalized to this input. OUT (2x) – Buffered output of the multiplied signal. INV – Buffered and inverted output of the multiplied signal . ​ RNDM SEQ (Random Modulation Sequencer) CHANGE – Turn this knob to create new random sequences or loop them STEP/∞/OSC SWITCH – Controls if the CHANGE button is influenced either via the STEP IN input or the OSC I PULSE waveform. In mid-position no additional changes are applied to the CHANGE button. STEP IN – CV input to control the CHANGE knob (if SWITCH is set to STEP) in order to created steps of looped and random sequences. CLK IN – CLOCK input for the RNDM SEQ. The CLOCK GENERATOR´s output is normalized to this input. RNDM OUT – Output of the RANDOM MODULATION SEQUENCER ​ CLOCK (Internal Clock Generator) CLOCK – Manual control of the CLOCK rate CLOCK CV – CV input with attenuator to control the clock rate. The RNDM SEQ CV output is normalized to this input. EXT CLK – External Clock input that overrides the internal clock. Any signal can be patched to this input (CV or audio). THRESHOLD – Sets a voltage threshold at which a clock pulse is generated. With a low threshold, clock pulses are already generated for very low voltages and conversely with a high threshold, clock pulses are only generated at peak voltages. In this way, you can use an audio drum loop, for example, to generate a clock signal and control the amount of clocks generated. ​ MLTMD FILTER (Multi-Mode Filter) CUTOFF – Manual control of the filter´s CUTOFF frequency RNDM - Amount of random modulation of the RNDM SEQ applied to filter. OVERLOAD IN – External input with attenuator. If you turn the attenuator past 12 o'clock, the incoming signal is starting to clip softly. FILTER IN - External input with attenuator. FM IN – Frequency Modulation input with attenuverter (bipolar). The internal LFO Triangle waveform is normalized to this input. RESONANCE – Feedback of the filter output to the input. This goes as far as self-oscillation. RESONANCE CV – CV input for RESONANCE control SLOPE – This button changes the LOWPASS and BANDPASS FILTER SLOPE from 2-pole (12db) to 4-pole (24db). BANDPASS/LOWPASS/HIGHPASS – Filter output of the corresponding filter modes V/OCT – CV input with 1V/OCT tracking. This way you can play the filter with self-oscillating resonance as a third synthesizer voice. VCA CV - Voltage controlled amplifier input that only affects the LOWPASS output. T² – Pre-Filter ring-modulated output of OSC I and OSC II triangle waveforms ​ OSC FM (Oscillator FM Cross-Modulation) FM AMT – Amount of frequency modulation applied to the target (OSC I, OSC II or both) FM CV – CV input to control the frequency modulation amount DIRECTION – Choose the direction of frequency modulation: OSC I modulating OSC II, OSC II modulating OSC I or both modulation each other. ​ OUT (Mixer and OSC I & OSC II Panning) LEFT/RIGHT – Stereo Output VOL I+II – Volume control of the T² output before it is routed to the MULTIMODE FILTER. If you want to use the MLTMD FILTER only with another sound source, simply turn this volume down. VOL II – Volume control of OSC II VOL I – Volume control of OSC I MIXER IN – External mixer input. Audio is directly routed to OUT. VOL IN – External mixer input volume control SPREAD – Extends the panning for OSC I and OSC II in opposite directions and thus distributes the two outputs in the stereo field. The ring-modulated output of OSC I and OSC II remains in the centre position. This way you can also use the stereo outputs as individual OSC outputs. QUICK START GUIDE Please click the image above to open or download the PDF file . SO MUCH TO EXPLORE! Use the multi-mode filter in self-oscillation as a third synth voice . Just turn down the I+II volume, patch a sequence to the v/oct input and use the vca! Add some noise to the mix by patching the noise output into the filter overload input. Turn the gate offsets up to unleash Krakong´s full droning capabilities , additionally cv modulate the OSC FM amount ! Use an external drumbeat to clock Krakong from an audio source . Play with the threshold to get different results! Don't forget to patch the CV output of the serial sequencers to the pitch input of the oscillators to get its full effect! Why not patching the pulse output into the gate input ? Or one of the many sequencer gate outputs into the decay trigger input? VIDEO AUDIO KRAKONG sounds, underlaid with an external beat. Each sample starts with a beat, then KRAKONG begins to play. Further down in the playlist follow some solo sounds. PANEL GALLERY 1/6 Up

3xeq / triple tilt eq / 4 HP ⇣ 3xEQ presents a row of three "One Knob" Tilt EQs, accompanied by an extra Mix Output. This module offers a streamlined solution for shaping waveforms, enriching basslines, refining hats and noises, and harmonizing elements within your mix. 1/3 key features 3x Tilt EQ Change Low and High Frequencies with just one Knob Mix Output Input Normalization for parallel EQíng Wrong Polarity Protection ​ specs & downloads width: 4 HP depth: 28 mm power: 26 mA @ +12V / 24 mA @ -12V documentation videos description / manual Each EQ will boost high frequencies and cut low frequencies when turning the pots clockwise and vice-versa when turning them counter-clockwise. Each input can be processed individually, but you may also take the sum of 2 or all three eq´d inputs from the Mix Output. The first Input is normalised to the other two inputs. Thus its possible to use all three EQs on one signal in parallel. prev Up next

pow! / usb power supply unit / 3 HP ⇣ POW ! is a 3HP USB Pow er Supply Unit for Eurorack. 1/3 key features USB PSU for Eurorack 300mA +12V 150mA -12V 500mA +5V from USB On/OFF Switch LED indication Skiff friendly ​ specs & downloads width: 3 HP depth: 25 mm power: +5V USB-C Power documentation videos description / manual With this compact module, you can conveniently energize your Eurorack modules using any +5V USB power source. Just plug in a C-Type connector to the USB jack, and you'll have a generous 300mA +12V and 150mA -12V available through the 2x5 male header on the PCB's underside. Remember to have a power cable with 2x5 female connectors at both ends. Control the power flow with the built-in switch, with an LED indicating the current status. Tailored for modest power needs in compact setups, this Power Supply Unit is designed to accommodate one or two modules in small cases. prev Up next