| Product Code: | AT 400W PSU (Original) with P8 & P9 connectors |
This rare, genuine AT power supply unit delivers reliable power for legacy systems built on AT technology. Specifically designed for vintage computing applications, this hard-to-find PSU ensures your classic hardware continues operating at peak performance.
Compatible
Systems
Plug-and-play
installation with comprehensive connector support:
Remark:
-P8 and P9 connectors MUST be plugged in so that the black wires are side by
side (together in the center).
-Some systems without motherboards do not require the P8
& P9 connectors which can be left unused.
-Some systems do not require the On/Off switch which can
just be left switched ON and tied up safely inside the machine.
-Supplied with a big latching switch suitable for most AT
systems. The switch is removable and can be replaced by another one (terminal
block size: 9x0.6mm). Check the diagram on the PSU for the correct wire
connection. A wrong connection will damage the PSU.
-Some rare AT PSUs come with an additional 6-pin flat connector labelled P10. (With three black wires and three +3.3V orange wires or three +5V red wires). This PSU does not include it. Check our store to find such an AT PSU or ask for assistance.
This genuine AT PSU combines authentic legacy compatibility with modern reliability standards, making it the ideal power solution for maintaining and restoring classic computer systems.
Full specifications for this product, verified against manufacturer data.
| Model Number | AT-350P. Model number may vary |
| AC Input | 115 -230V. Suitable worldwide. With manual Voltage switch. Select the suitable voltage BEFORE using the PSU to prevent damage. |
| Power Output | 400-Watt |
| Colour | Grey |
| Ventilation | 1x 80mm fan |
| Product size & weight | 85x150x140mm, 3.3x5.9x5.5inch, 1.4kg |
| Molex | 4 |
| SATA | 2 |
| Floppy (Berg) | 1 |
| 6 pin P8 & P9 | P8 & P9 with standard AT wiring. Note that some PSUs have a slightly different color wiring even though the voltages are the same. |
| 6-pin P10 | Some rare AT PSUs come with an additional 6-pin P10 connector with 3 black wires and 3 red wires (5V) or 3 orange wires (3.3V). This PSU does not come with it. If you need this P10 connector, check our other AT PSU in our store. |
| +12V1 | 20A |
| +5V | 30A |
| -12V | 0.5A |
| -5V | 0.5A |
| Package size & weight | 100x250x200mm, 3.9x9.8x7.9inch, 1.7kg |
| Product Condition | Brand new |
| Warranty | 1 year standard warranty + 1 year FREE extended warranty = 2 year warranty. |
| Return | Return within 30 days if unwanted |
| Made in | China |
| Shipped from | United Kingdom |
| Remarks | P8 and P9 connectors MUST be plugged in so that the black wires are side by side (together in the center). |
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