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4X27A12494: Lenovo ThinkSystem DE Series 1200W AC Redundant Power Supply

Lenovo 4X27A12494 Power supplie
LenovoPower supplies

Also listed as: 4X27A12494-01, 01DC670, SP47A12494, B4CT, SP47A57630

1200W hot-swap redundant AC power supply module designed for 2U and 4U controller and expansion enclosures in ThinkSystem DE Series arrays.

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Specifications

Part number4X27A12494
BrandLenovo
TypePower supplies
Other numbers4X27A12494-01, 01DC670, SP47A12494, B4CT, SP47A57630
Output power (W)1,200
Input voltage100-240V AC
Efficiency rating80 PLUS Platinum
Hot swapYes

About the 4X27A12494

The Lenovo 4X27A12494 is a 1200W AC hot-swap redundant power supply module designed for Lenovo ThinkSystem DE Series SAN storage enclosures. Operating across 100V to 240V AC input with 80 PLUS Platinum efficiency, it provides redundant, load-sharing power and integrated chassis cooling fans for DE2000H, DE4000H, and DE6000H controller and expansion enclosures.

Compatibility

Compatible with Lenovo ThinkSystem DE2000H, DE4000H, DE4200H, DE6400H, and DE6600H arrays, as well as DE240S (2U 24-drive) and DE120S (2U 12-drive) expansion shelves. It utilizes a proprietary storage enclosure form factor with dual integrated cooling fans. It is mechanically incompatible with standard ThinkSystem SR or ST server chassis.

How to identify a genuine unit

The power supply features a prominent rear extraction handle, latch, and standard C14 AC power inlet. The top label displays Lenovo option part number 4X27A12494, FRU part number 01DC670, and feature code B4CT. SANtricity management monitors power supply telemetry, fan tachometers, and ambient inlet temperatures.

Buying used

When sourcing pre-owned DE Series power supplies, verify that both internal cooling fans spin freely without bearing noise. Inspect the rear blind-mate power and signal connector for pitted or burned contacts. Confirm that the latching lever locks securely into the storage chassis to ensure uninterrupted electrical contact.

Reference prices (last 12 months, updated 2026-10-20)

Refurbished: USD 185 (1 sighting, Oct 2026)

Used: USD 145 (1 sighting, Oct 2026)

All sightings
SellerConditionPriceNoteSeen
eBayusedUSD 145eBay sold listing2026-10-20
IT CreationsrefurbishedUSD 185Tested clean working pull from DE array2026-10-04

Prices seen on public listings on the dates shown, before tax and shipping. Not an offer.

Fits these models

Check compatibility with Lenovo

Before you buy, confirm the exact configuration against the vendor's own lists: firmware levels, operating systems, adapters and optics that Lenovo has tested with the Lenovo 4X27A12494.

Buying or selling 4X27A12494?

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