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Silver ATX power supply unit with fan grille and power socket

KHACHIMO

KHACHIMO WS-C3750G-12S-S 150W Power Supply PA-1151-2B

SKU CH-A9BY-SXK3K

An ATX power supply delivering 150 watts with 80 PLUS Gold efficiency, zero-RPM fan mode and Modern Standby compatibility

  • TypeATX
  • Modern Standby support enables rapid wake-from-sleep and improved low-load efficiency
  • 80 PLUS Gold certification delivers high efficiency for lower power draw and cooler running
  • Zero RPM fan mode stops the fan at low and medium loads for near-silent operation
  • Resonant LLC topology with DC-to-DC conversion provides clean, consistent power and reduces coil whine
  • 150W ATX power supply compatible with WS-C3750G-12S-S and part numbers 341-0048-03, 341-0048, PA-1151-2B

150W ATX power supply for Cisco WS-C3750G-12S-S

This 150 watt ATX power supply replaces the PA-1151-2B unit used in Cisco Catalyst 3750G 12-port switches. It delivers the rated output required by the original chassis and carries 80 PLUS Gold certification for efficient operation.

Who this suits and who should look elsewhere

Network administrators maintaining a WS-C3750G-12S-S stack will find a direct-fit replacement here. Builders assembling a standard desktop PC or a server with redundant hot-swap bays cannot use this unit because the form factor and connector layout are specific to the Catalyst platform.

Installation notes and common pitfalls

The supply slides into the rear bay of the 3750G chassis and locks with the captive screw; no cable harness changes are needed. The most frequent issue is forgetting to seat the unit fully before tightening the screw, which leaves the AC inlet misaligned and prevents the switch from powering on.

Highlights

  • Modern Standby support enables rapid wake-from-sleep and improved low-load efficiency
  • 80 PLUS Gold certification delivers high efficiency for lower power draw and cooler running
  • Zero RPM fan mode stops the fan at low and medium loads for near-silent operation
  • Resonant LLC topology with DC-to-DC conversion provides clean, consistent power and reduces coil whine
  • 150W ATX power supply compatible with WS-C3750G-12S-S and part numbers 341-0048-03, 341-0048, PA-1151-2B

Specifications

TypeATX

Questions about this item

What motherboard power connector does the 150W ATX supply require?

It uses a standard ATX connector, so any motherboard with a 24-pin ATX socket will accept it.

Will the Zero RPM fan mode stay silent when paired with an older CPU that idles at higher wattage?

The fan stops at low and medium loads; if the older CPU draws enough power to exceed the medium threshold, the fan will spin.

How can I confirm the 80 PLUS Gold efficiency is active after installation?

Monitor input power at the wall while the system idles; a Gold unit should draw noticeably less than a non-certified supply at the same load.

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