PSUCIT400MICRO

M-400U 400W Micro ATX PSU

⚠️ Reference pricing provided. In case of supply shortages, we will connect you with our trusted procurement partners to ensure your project's continuity.

Manufacturer: CIT
Product type: AC / DC Enclosed Power Supplies
SVHC: No SVHC (04-Feb-2026)
Product Range: -
No. of Outputs: 7Outputs
Output Power Max: 400W
Current, Output 4: 300mA
Input Voltage VAC: 230V AC
Power Supply Output Type: Fixed
Output Current - Output 1: 18A
Output Current - Output 2: 20A
Output Current - Output 3: 21A
Output Voltage - Output 1: 3.3VDC
Output Voltage - Output 2: 5VDC
Output Voltage - Output 3: 12VDC
Output Voltage - Output 4: -12V
Power Supply Applications: ITE

Delivery and price
Units per pack	1
Price	31.99 €
Current stock	10+
Lead time	30 days

Datasheet

## **Key Features** 

- Silent PSU with Temperature Control Fan ATX 12V Compliant for all kinds of CPU and mainboard MTBF 50,000 Hours @ 25 degrees C 2 x SATA Connectors 4 x 4Pin Molex Connectors 

**PSU Specifications** 

**==> picture [283 x 45] intentionally omitted <==**

**----- Start of picture text -----**<br>
AC INPUT: 230 VAC 4A 5060Hz<br>DC +3.3V +5V +12V1 12V +5VSB<br>Output 18A 20A 21A 0.3A 2A<br>es Max 400W<br>**----- End of picture text -----**<br>


## **Connectors** 

**==> picture [112 x 262] intentionally omitted <==**

**----- Start of picture text -----**<br>
20+4 Pin Main Connectors:<br>1<br>4Pin 12V Connectors:<br>1<br>SATA Connectors:<br>2<br>4Pin Molex Connectors:<br>4<br>Floppy Drive Connectors:<br>1<br>**----- End of picture text -----**<br>


## **Detailed Specifications** 

**Dimensions:** 125mm x 65mm x 100mm (W x H x D) **Input Voltage:** 230 VAC **Input Current:** 4A **Input Frequency Range:**[5060Hz] **PFC:** Yes  Power Factor Control **Power Good Signal:**[150450 ms] **Hold Up Time:** 1MS40MS **Efficiency:** 75% **MTBF:** 100,000 Hours **Protection:** OVP / UVP/ OPP **Power:** 400W **Operation Temperature:**[45°C] **Safety:** CE / ROHS 

**Cooling:** 8cm Fan **Noise:** < 17 dBA 

## **General Specifications** 

**Manufacturer Part Number:**[M400U] **EAN Number:** 5055492411051 **Has Mains Plug:** No **Colour:** Grey **What's In The Box:**[PSU] **Unit (Product) Dimensions** 126mm x 64mm x 101mm (W x H x D) **(mm): Packaging Dimensions** 163mm x 76mm x 141mm (W x H x D) **(mm): Net Weight (KGs):**[0.7 KGs] **Gross Weight (KGs):**[0.8 KGs]

Updated at June 4, 2026

About Novapart

Novapart is a B2B electronic component broker specialising in stock shortages and cost reduction. We source hard-to-find parts and identify compliant alternatives across a catalogue of 410,000+ components from 500+ manufacturers.

Learn more →

Stock Shortage Specialist

When a component is unavailable, discontinued or has an unacceptable lead time, we tap into our network of vetted European and Asian distributors to source what you need — without compromising on quality or traceability.

Request a quote →

Compliant Alternatives

We identify pin-to-pin, electrically equivalent substitutes that meet the same certifications (RoHS, AEC-Q100, REACH) as your original specification — validated against datasheets, not just part numbers. Often at a lower cost.

BOM Analysis service →