Most Viewed
Latest Arrivals
  • PC Systems
  • Gaming
  • Gaming PCs
  • Laptops
  • Components
  • Monitors
  • Networking
  • Accessories
  • Deals
  • Clearance
Rated Excellent
FREE Delivery Over £50
Custom PCs built fast
3 year on-site PC warranty*
CiT Micro 300W Power Supply

CiT Micro 300W Power Supply

CCL Code: PSU1354

Sold out

Notify Me

CiT Micro 300W Power Supply


Key Features:

  • 4x Molex
  • 2x SATA
  • 4-Pin CPU EPS
  • SFX Form Factor
CCL Code: PSU1354

Sold out

Sorry, we don't have any stock of this product. Please click 'Notify Me' and we will let you know when the item is available.

Notify Me



Detailed Specifications

  • Dimensions:    125mm x 65mm x 100mm (W x H x D)
  • Input Voltage:    230 VAC
  • Input Current:    5A
  • Input Frequency Range:    50-60Hz
  • PFC:    Yes - Passive Power Factor Control
  • Power Good Signal:    150-450 ms
  • Hold Up Time:    1ms-40ms
  • Efficiency:    75%
  • MTBF:    100,000 Hours
  • Protection:    OVP / UVP/ OPP
  • Power:    300W
  • Operation Temperature:    45°C
  • Safety:    CE / ROHS
  • Cooling:    80mm fan
  • Noise:    < 17 dBA

General Specifications

  • Manufacturer Part Number: M-300U
  • EAN Number: 5055492411020
  • Has Mains Plug: No
  • Colour: Silver
  • What's In The Box: PSU
  • Unit (Product) Dimensions (mm): 125mm x 60mm x 100mm (W x H x D)
  • Packaging Dimensions (mm): 140mm x 80mm x 160mm (W x H x D)
  • Net Weight (KGs): 0.7 KGs
  • Gross Weight (KGs): 0.8 KGs

Main Features

  • Silent PSU with Temperature Control Fan
  • Complies with Intel ATX12V 2.31VER
  • Fan Speed Control Function Inside
  • Passive PFC (Power Factor Correction)
  • Low noise with intelligent-thermal fan control technology
  • ATX 12V Compliant for all kinds of CPU and mainboard
  • MTBF 50,000 Hours @ 25 degrees C


SATA Connectors 2
CPU Connectors 1x 4-pin
Motherboard Connectors 1x 20+4-pin
Molex Connectors 4
Floppy Connectors 1

Key Features

Form Factor SFX
Power 300 W
Modular Cables No
80Plus Rated No
PSU Form Factor SFX
Floppy Connector 1
Motherboard Power Connectors 4-Pin
PCI-E Pin Type None
PSU Depth 100 mm
ETA Efficiency Cert. Not Rated
Lambda Noise Cert. Not Rated
CPU Power Pins (male) 4


Warranty 1 Year

Item Details

Manufacturer CiT
Manufacturer Code M-300U
EAN 5055492411020
Condition New

Warranty Information

Warranty 1 Year

Manufacturer Information

Manufacturer CiT
Manufacturer Code M-300U

Do you have you a question about the CiT 300W Micro Atx PSU?

Q: How can I change the fan speed for the unit? Ideally I'd like it running near silent.
Answer by Dan on 5th April 2017
This power supply does not have any manual controls for the fan speed, it changes automatically depending on the load. -Danlevan
0 customers found this answer helpful.
Post Answer
Q: hi could you tell me the length of all the cables except, the mains cable .thanks
Answer by Dan on 22nd February 2016
The manufacturer doesn't list any cable lengths and we don't have them in our warehouse to measure. CiT power supplies tend to be fairly short cables though. -Danlevan
0 customers found this answer helpful.
Post Answer
Q: Please can you provide certificates or reports for this product showing compliance with the following directives LVD, EMC and RoHS.
Answer by Dan on 4th January 2016
These can usually be supplied on request when an order is placed, we would need to then obtain them from the manufacturer. Our customer service team should be able to assist on -Danlevan
0 customers found this answer helpful.
Post Answer
Q: Is the cooling fan at <17dBA classed as "silent" or "quiet"?
Answer by Dan on 8th December 2015
It would be classed as quiet, but it should be very quiet. -Danlevan
0 customers found this answer helpful.
Post Answer
Q: What is the min/max r.p.m speed of the fan.
Answer by Website User on 22nd September 2014
The manufacturer hasn't listed any speeds for the fan, unfortunately. -Danlevan
0 customers found this answer helpful.
Post Answer
Q: What are the Dimensions of this PSU?
Answer by CCL on 19th November 2012
This PSU is approximately 7.6cm high, 12.5cm wide and 10cm in depth. -MR
1 customer found this answer helpful.
Post Answer
4.3 / 5 3 reviews

Alan Hall

June 2021

Cheap and works fine, but not "Silent Technology" as described! The fan appears to run at constant speed regardless of load and is quite shrill. I find it objectionable in my home office.


December 2019

Does what it should and does it well.

Ian Hessey

August 2019

Is what it is, Small PSU for a small rig. Perfect for a mini server or a mini firewall.

View more products like this