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Rectangular grey metal server PSU with two 40mm fans and sliding main connectors

TOPOWER

TOPOWER TOP-350W2U 350W Server Power Supply

SKU CH-BVF5-Y3JQ5 MPN TOP-350W2U

Delivers 350W via ATX12V/EPS12V with dual 40mm thermally controlled fans and sliding main connectors

  • Max wattage350 W
  • Power supply redundancySingle
  • Main power connector20+4Pin
  • Output current+3.3 V@24A, +5 V@24A, +12 V@24A, +5VSB@3A
  • Supply voltage100–240 V
  • Fan configuration2
  • Delivers 350W maximum power for server workloads
  • 20+4Pin main connector fits standard ATX motherboards
  • Dual 40mm fans provide thermally controlled cooling
  • Wide 100-240V input suits global deployments
  • OVP OCP SCP protection safeguards all outputs

Server power supply for industrial PCs

The TOPOWER TOP-350W2U delivers 350W of continuous power in a single ATX12V / EPS12V unit designed for industrial PCs and server chassis. It provides stable output across +3.3V@24A, +5V@24A, +12V@24A, [email protected] and +5VSB@3A rails. The unit accepts a universal 100 - 240 V input for worldwide deployment.

Sliding main connectors limit cable routing

The 20+4Pin main connector and 4/8 pin CPU connector use a sliding design that fixes their relative position, which can restrict routing in tight enclosures. Output current on the +12V rail is capped at 24A, so systems with multiple high-draw processors or add-in cards may exceed the available headroom. Protection circuits include OVP, OCP and SCP on all outputs.

Two 40mm fans require clearance

Thermally controlled cooling relies on two 40mm fans with Silent Control Technology that adjust speed to load and temperature. The gray iron case adds durability but occupies a standard 2U height, so installers must verify rack or chassis depth before fitting. Sliding connectors simplify the initial connection but can snag on adjacent components during removal.

How it compares

Measured against everything we stock in Server & Hot-Plug PSUs, at today’s prices. Recalculated every night.

Price $45.99
Cheaper than about 88% of the 3,798 comparable items (median $131.99).
Max wattage 350 W
Lower than about 75% of the 235 comparable items (median 668 W).

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Specifications

Product
Brand nameTOPOWER
Model nameTOP-350W2U
Product typeATX12 V / EPS12 V
Power
Max wattage350 W
Power supply redundancySingle
Main power connector20+4Pin
Output current+3.3 V@24A, +5 V@24A, +12 V@24A, +5VSB@3A
Supply voltage100–240 V
Size & build
Shipping weight1.88 kg
Package size284 × 203 × 99 mm
More details
Fan configuration2

Questions about this item

Should I choose the 20+4 pin or the 4/8 pin main connector for my server motherboard?

The unit includes sliding connectors that cover both 20/24 pin and 4/8 pin layouts, so you can match whichever main power socket your board provides.

What does the 350 W maximum power rating mean for a typical 1U or 2U server build?

It sets the total combined output across all rails at 350 W, with the +12 V rail delivering up to 24 A to handle CPU and drive loads in a standard rack chassis.

The spec lists ATX12V and EPS12V — which standard governs the +12 V rail in practice?

Both standards are supported; the EPS12V portion ensures the dedicated 4/8 pin CPU connector meets server-grade +12 V requirements while the ATX12V rails serve the main board and peripherals.

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