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46C3447: lenovo ThinkSystem 10Gb SFP+ SR Optical Transceiver

lenovo 46C3447 Transceiver10GbE SFP+SFP+
lenovoTransceivers10GbE SFP+

Also listed as: 46C3447-01, 46C3449, SP47A3447, 5053, AFBR-709SMZ-LN

10GBASE-SR short-range 850nm optical SFP+ transceiver module providing high-speed fiber connectivity for ThinkSystem network adapters.

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Specifications

Part number46C3447
Brandlenovo
TypeTransceivers
Other numbers46C3447-01, 46C3449, SP47A3447, 5053, AFBR-709SMZ-LN
Interface10GbE SFP+
Wavelength nm850
Max distance m300
ConnectorLC Duplex
Form factorSFP+

About the 46C3447

The Lenovo 46C3447 is a 10GBASE-SR short-range optical SFP+ transceiver module designed for Lenovo ThinkSystem 10Gb Ethernet network adapters. Operating at an 850nm wavelength over multimode fiber (MMF), it supports transmission distances up to 300 meters on OM3 fiber and 400 meters on OM4 fiber, providing standard optical interconnects to top-of-rack data center switches.

Compatibility

Compatible with all Lenovo ThinkSystem network adapters featuring SFP+ or SFP28 optical cages, including Intel X710-DA2, Broadcom 57414, and Mellanox ConnectX-5. It connects using standard LC duplex optical patch cables. It is encoded specifically with Lenovo EEPROM microcode to eliminate unsupported transceiver warnings in host network adapters.

How to identify a genuine unit

The transceiver features a silver metal housing with a black extraction bail latch and an LC duplex optical receptacle. The label lists Lenovo option part number 46C3447, FRU part number 46C3449, and feature code 5053. When queried via ethtool or adapter CLI tools, it reports genuine Lenovo vendor strings and optical telemetry.

Buying used

When sourcing pre-owned 10G optical transceivers, inspect the optical bore for dust or scratches on the internal ferrule lenses. Use protective dust caps during shipping and handling. Verify that the transceiver's digital optical monitoring (DOM) reports valid transmit and receive power levels under active connection.

Reference prices (last 12 months, updated 2026-10-22)

Refurbished: USD 25 (1 sighting, Oct 2026)

Used: USD 18 (1 sighting, Oct 2026)

All sightings
SellerConditionPriceNoteSeen
eBayusedUSD 18eBay sold listing2026-10-22
ServerMonkeyrefurbishedUSD 25Tested clean working pull in anti-static bag2026-10-11

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

Fits these models

Works together

How the lenovo 46C3447 connects to servers, storage and the network: 3 ways, with the hardware on each path.

iSCSI and NVMe/TCP over EthernetFile storage (NFS and SMB)Hyperconverged cluster

iSCSI and NVMe/TCP over Ethernet

Keep the speed the same at all three points: a 25GbE server, a 25GbE switch port and a 25GbE array port. Mixed speeds work but the slowest link sets the pace.

Adapters for the server

Switches

Storage

iSCSI and NVMe/TCP over Ethernet: how it fits together

File storage (NFS and SMB)

Front-end ports face the clients; back-end ports (on scale-out systems) connect the nodes to each other and need their own switch pair.

Adapters for the server

Switches

Storage

File storage (NFS and SMB): how it fits together

Hyperconverged cluster

Plan at least two 25GbE ports per node to two switches; all-NVMe clusters often move to 100GbE.

HCI nodes

Adapters for the server

Switches

Hyperconverged cluster: 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 46C3447.

Buying or selling 46C3447?

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