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FB250-60NAS Compatibility list


PSU measurements PSU connectors and certifications PSU comparison chart how to choose a psu How to test a PSU


If your internet search brought you here, chances are we have a suitable power supply for your PC.

Press on "Ctrl + F" to find your model number on this page and follow the link bellow to purchase online.

Can't find what you need? email us your PC & PSU model numbers or pictures, chat online or call us.

Need some extra connectors? Just let us know in the remark box when ordering.

Please also read our FAQ about Replacement Power Supplies


This FB250-60NAS is a replacement PSU for some Netgear ReadyNAS boxes.

It has an improved ventilation and a single special 20pin connector.





-Our PSU replaces the original ST220FUB, FSP200-50PLA especially designed for the above PCs.

- This PSU is NOT compatible with standard ATX computers. This is because the 20pin connector pin out has been designed especially for the 4 computers mentioned above.

-This item includes the Power supply unit alone. It DOES NOT come with the tray.

-This PSU comes with a fitting bracket and a special 20pin connector. It has NO other connectors.

-Unlike the original, this PSU is not fanless. It has a quite 40mm fan and extra vent holes on both sides for an improved ventilation (no need to use the transparent plastic shield on our PSU).

-It is more powerful for a better upgradeability & system stability.
-It has high quality components, is very reliable and has an extremely low failure rate.
-The vent holes near the power socket are blocked when installed but the additional large vent holes on the side is sufficient to compensate.

-Some ReadyNAS 1100 may require the power socket to be orientated the other way round. Please let us know in the remark box at check out if this is required. See illustration bellow:

-See how to remove the PSU from your ReadyNAS box here>>:

To purchase, click on this "buy Now" button and order item No. 31.

Readynas PSU


PSU compatibility list




-Size: 40x80x150mm.
-Brand: Fire Bull (OEM PSU manufactured by FSP)
-Voltage: 110/230V (Full range).

-Certifications: All. 80+
-Connectors: Special 20pin.

-Unit Net Weight: 0.7Kg.

-Packing: Single box: 25x20x10Cm, 1Kg / Bulk Box: 12pcs, 32x32x30Cm, 10Kg.

-Rating: +3.3V: 18A, +5V: 18A, +12V: 17A, +5Vsb: 2A, -12V: 0.5A,




This PSU replaces the following PSUs:







Modified ST-220FUB (with one single 20pin connector and no fan).

This PSU is compatible with the following computers:


Netgear ReaduNAS NV

Netgear ReadyNAS NV+











Netgear ReadyNAS NVX

Netgear ReadyNAS 1100

Netgear ReadyNAS 1500


Netgear ReadyNAS 2100




This compatibility list is accurate and reliable to the best of our knowledge. However, it is only a guide to help you find a suitable PSU and we cannot guarantee compatibility at 100%. We do not assume any liability whatsoever for the accuracy and completeness of the above information.

Errors and omissions excepted (E&OE)





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                              Updated on 20-03-18. Evercase Technology. All rights reserved,  Email the webmaster.