Arista QSFP-100G-XSR4 100GBASE-XSR4 850nm 300m OM4 DOM QSFP28 Transceiver

The Arista QSFP-100G-XSR4 is a QSFP28 100G transceiver for parallel multimode fiber. It sends four 25G lanes at 850nm over an MPO-12/UPC connection and reaches up to 150 meters on OM3 or 300 meters on OM4 fiber, well past the 70 and 100 meter limits Arista gives for standard 100GBASE-SR4 optics.

That extra reach matters when leaf and spine rows sit farther apart than SR4 allows but the building is already cabled with OM3 or OM4 trunks. The connector has a UPC polish, so plan on MPO-12 UPC trunks and patch cords. For shorter in-row links, the QSFP-100G-SR4 100m multimode transceiver uses the same MPO-12 cabling. Where only duplex LC multimode fiber is in place, the QSFP-100G-SWDM4 duplex multimode transceiver runs 100G over two fibers instead of eight.

Arista specifies a maximum power draw of 3.5W and a per-lane transmit power of -8.3 to +2.4 dBm. Digital optical monitoring (DOM) reports temperature, supply voltage, laser bias and optical power for each lane, which helps trace a dirty connector or a damaged fiber in a trunk. The module fits Arista QSFP28 100G ports, including those on 7050CX3, 7060CX, 7280R and 7500R platforms.

This seller refurbished QSFP-100G-XSR4 transceiver is tested, working, and covered by the NetworkTigers one-year warranty.