Lenovo 100Gb SR4 QSFP28 Ethernet Transceiver

Four lanes add up to 100Gb, and the SR4 in the name of the 4M27A67042 tells you it uses four parallel lanes of short-reach optics. The QSFP28 connector is the pluggable form that carries them.

The port speed is 100Gb, the connector is QSFP28 and the Lenovo feature code is BFH1. It does not list a media type, a reach or compatible systems, so check your cabling: SR4 normally pairs with parallel fiber and an MPO-style connector, and your patching needs to match.

Transceivers at 100Gb are usually bought for spine links, storage networks and server uplinks in new builds. A matching pair of modules, one for each end, is the usual order.

The 4M27A67042 is available new or refurbished, each with a choice of 1 year or 3 years of warranty. No used offer is listed. Send us your switch and adapter models and quantity for pricing.