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4M27A09984: lenovo ThinkSystem 32Gb FC SFP+ Optical Transceiver

lenovo 4M27A09984 Transceiver32Gb Fibre ChannelSFP+
lenovoTransceivers32Gb Fibre Channel

Also listed as: 4M27A09984-01, 01KN520, SP47A09984, B09C, AFBR-57B4APZ-LN

32Gb Fibre Channel short-wave optical SFP+ transceiver module providing high-speed SAN connectivity for ThinkSystem FC HBAs and switches.

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Specifications

Part number4M27A09984
Brandlenovo
TypeTransceivers
Other numbers4M27A09984-01, 01KN520, SP47A09984, B09C, AFBR-57B4APZ-LN
Interface32Gb Fibre Channel
Wavelength nm850
Max distance m100
ConnectorLC Duplex
Form factorSFP+

About the 4M27A09984

The Lenovo 4M27A09984 is a 32Gb Fibre Channel short-wave (SW) optical SFP+ transceiver module engineered for Lenovo ThinkSystem Fibre Channel HBAs and Brocade-based DB Series SAN switches. Operating at 850nm over multimode fiber, it delivers 32Gbps line rate performance with auto-negotiation support down to 16Gbps and 8Gbps, ensuring backward compatibility with legacy SAN fabrics.

Compatibility

Compatible with Lenovo ThinkSystem DB610S and DB630S Fibre Channel switches, DE Series 32Gb FC host interface cards, and Emulex/QLogic 32Gb FC host bus adapters installed in ThinkSystem servers. Connects using standard LC duplex multimode fiber optic cables. It is encoded specifically with Lenovo/Brocade microcode.

How to identify a genuine unit

The transceiver features a metal housing with an LC optical connector and an extraction handle. The top label displays Lenovo option part number 4M27A09984, FRU part number 01KN520, and feature code B09C. In Brocade Fabric OS (FOS) and host HBA management consoles, it registers as a certified 32Gb SW optical transceiver.

Buying used

When purchasing used 32Gb FC optical transceivers, check the internal optical ferrule lenses for scratches or debris. Verify that the transceiver's digital diagnostic monitoring (DDM) reports proper laser bias current and transmit/receive optical power. Confirm that the module retains genuine Lenovo/Brocade firmware encoding.

Reference prices (last 14 days, updated 2026-10-24)

Refurbished: USD 75 (1 sighting, Oct 2026)

Used: USD 55 (1 sighting, Oct 2026)

All sightings
SellerConditionPriceNoteSeen
eBayusedUSD 55eBay sold listing2026-10-24
ServerMonkeyrefurbishedUSD 75Tested clean working pull in anti-static bag2026-10-14

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

Fits these models

Works together

How the lenovo 4M27A09984 connects to servers, storage and the network: 1 way, with the hardware on each path.

Fibre Channel SAN

Fibre Channel SAN

Match the speed: 16Gb and 32Gb FC HBAs, switches and array ports work together, and each generation also runs one or two speeds below its own (a 32Gb port runs at 16Gb and 8Gb).

Adapters for the server

Switches

Storage

Fibre Channel SAN: how it fits together

Plan and size it

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 4M27A09984.

Buying or selling 4M27A09984?

New, refurbished or used. Tell us the quantity and condition and we connect you with a vetted reseller in your region, usually within one working day.

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Sources