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Lenovo server power supply unit, black metal casing, 2.4 kg

Lenovo

Lenovo 4X20E54691 110 V 220 V AC 80 Plus Gold server power supply

SKU CH-1AB0-62QRT MPN 4X20E54691

Hot-swap redundant power module with 80 Plus Gold efficiency accepts 110 V to 220 V AC input

  • TypePower Module
  • Input Voltage110 V AC 220 V AC
  • Features80 Plus Gold TÜV
  • Weight2.4
  • Hot-swap redundancy keeps servers running during module replacement
  • 80 Plus Gold efficiency lowers energy waste at high loads
  • Wide 90–264 V AC input handles global voltage ranges
  • Full protection suite guards against overload and fault conditions
  • Light 2.4 kg design eases rack installation and maintenance

Redundant server power module

This Lenovo 4X20E54691 is a hot-swap redundant power supply built for ThinkServer platforms. It accepts 110 V AC or 220 V AC input across a 90 Vac to 264 Vac range. The unit carries 80 Plus Gold certification with TÜV verification. High power density keeps the chassis compact while delivering reliable energy to the server.

Buyers needing hot-swap redundancy

Organisations that require continuous uptime and the ability to replace a supply without shutting down will benefit from this module. It suits environments where high efficiency and low current THD are valued. Buyers who need a non-redundant desktop PSU or a different form factor should look elsewhere. The design targets server-class availability rather than workstation use.

80 Plus Gold efficiency rating

The single specification that decides fit is the 80 Plus Gold certification confirmed by TÜV. This level guarantees high efficiency and high power factor across typical loads. If your project demands Platinum-rated efficiency or a lower certification tier, this unit will not match that requirement.

Highlights

  • Hot-swap redundancy keeps servers running during module replacement
  • 80 Plus Gold efficiency lowers energy waste at high loads
  • Wide 90–264 V AC input handles global voltage ranges
  • Full protection suite guards against overload and fault conditions
  • Light 2.4 kg design eases rack installation and maintenance

Specifications

BrandLenovo
Series80 Plus
Model4X20E54691
TypePower Module
Input Voltage110 V AC 220 V AC
Features80 Plus Gold TÜV
Weight2.4
Shipping weight1.36 kg
Package size279 × 127 × 102 mm

Questions about this item

Does the 4X20E54691 power module ship with cables or mounting rails, or must they be ordered separately?

The unit is supplied as the power module only; cables and rails are not included and must be purchased separately.

The spec lists 110 V and 220 V AC input — which voltage should I select for my rack?

The supply accepts a wide 90 Vac to 264 Vac range, so it operates on either 110 V or 220 V mains without any manual switching.

What does the 80 Plus Gold rating mean for actual power draw in a running server?

It guarantees at least 80 % efficiency at 20 % load and higher efficiency at typical loads, reducing waste heat and electricity cost.

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