power supply for Promise SmartStor NS4300N and NS4600N NAS, showing the 24-pin connector

NS4300N NS4600N PSU

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Brand:FSP
Product Code: NS4300N NS4600N replacement PSU
Product available in stock : 19

  • £69.00

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Replacement PSU for Promise SmartStor NS4300N & NS4600N NAS 270W

Branded Fortron 24-pin power supply engineered specifically for the Promise SmartStor NS4300N and NS4600N NAS enclosures. Auto-range 110–220V input, no manual voltage switch needed. Both models are long discontinued, so a genuine spare like this is the easiest way to bring a working unit back into service.

Compatible Systems
Promise SmartStor NS4300N
Promise SmartStor NS4600N
Key Features
NAS-Specific 24-Pin ConnectorShaped and wired to match the SmartStor board exactly
270W Output PowerMatches original spec for both models
Auto-Range Input110–220V, no manual switch required
Quiet RunningNoticeably quieter than the original NS4300N PSU, which was known for its noisy fan
Fortron BrandedEstablished PSU manufacturer, not an unbranded clone
Compact Footprint150 x 85 x 40mm, grey housing
Why Choose This PSU
Direct FitNo modification needed for NS4300N or NS4600N
Guaranteed CompatibilityPurpose-built for these exact models
Built to LastGenuine Fortron components throughout
2-Year Vanda Trading WarrantyExtended cover beyond the standard manufacturer warranty
Cost-EffectiveA fraction of the cost of a full NAS replacement
Check your connector carefully. Although this unit has a 24-pin connector like a standard ATX PSU, the shape and pinout are specific to the SmartStor NS4300N and NS4600N — it will not fit a generic ATX 24-pin socket, and a generic ATX PSU will not fit this NAS. See the Specifications and Compatibility tabs to confirm your model. Not sure? Contact us with your NAS model number and a photo of the old PSU — we're happy to help.
Technical Specifications

Full specifications for this product, verified against manufacturer data.

Specification
Model Number FSP270-60LE (NS4300N)
AC Input Full range 110 - 230Volt. Suitable worldwide without modification or manual setting.
Power Output 270 Watt
Material Metal Casing
Colour Grey
Ventilation 1x 40mm fan at rear (near cable exit). Some similar PSUs come with the fan at the front (near the power socket). The airflow in both types of PSUs is exactly the same: the hot air from the PC and the PSU is expelled efficiently via the vent holes.
Safety Standards Global approved: RU, CSA, TUV, N, CE, BSMI, CCC, FCC
Efficiency Level 80 Plus Bronze
Product size & weight 4 x 8 x 15 cm / 1.57 x 3.15 x 5.9 inch / 0.8Kg
Other With Active PFC and Ball bearing cooling fan.
Connectors
20/24-pin ATX Proprietary 24pin connector suitable for Promise Smartstor NS4300n and NS4600n NAS
DC Output
+12V1 16A
+12V2 10A
+5V 18A
+3.3V 16A
+5Vsb 2.5A
-12V 0.8A
More Info
Package size & weight 30 x 20 x 10 cm / 11.8 x 7.8 c 3.9 inch / 1kg
Product Condition Brand new
Warranty 1 year standard warranty + 1 year FREE extended warranty = 2 year warranty.
Return Return accepted within 30 days if unwanted.
Made in China
Shipped from United Kingdom
Remarks Contact us with your old PSU model number and picture if you require assistance in finding a suitable replacement. It is advisable to test your old PSU before purchasing a new one (see last picture).
Need help confirming this is the right product for your system? Contact us with your existing part number or a photo and we will advise.
Promise SmartStor NAS PSU (24-Pin) Compatibility

This power supply is built specifically for the two Promise SmartStor models listed below — check your NAS model before ordering.

Not a generic ATX 24-pin PSUDespite sharing a 24-pin count with standard desktop ATX power supplies, the connector shape and pinout on this unit are unique to the SmartStor NS4300N and NS4600N. It will not work in a regular PC, and a standard ATX PSU will not work in these NAS units.
Compatible Systems 2
  • Promise SmartStor NS4300N
  • Promise SmartStor NS4600N
Not sure if this is the right PSU? Other Promise SmartStor models (e.g. NS2300N, DS4600) may use a different power supply. Contact us with your exact NAS model number and a photo of the old PSU — we're happy to check compatibility before you order.
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