AT-QSFP28-LR4 AlliedTelesis Compatible 100G QSFP28 LR4 10km SMF Transceiver

The AT-QSFP28-LR4 is a QSFP28 module that carries 100G across single-mode fiber to 10km using the LR4 grade, terminated on a duplex LC pair. Coded for Allied Telesis switching, it is hot-swappable. At a 10km reach on single-mode plant it fits data-center interconnect and building-to-building 100G aggregation, and it reports live optical diagnostics over DDM once the link is established.

• Form Factor: QSFP28
• Protocol: LR4
• Fiber Type: SMF
• Reach: 10km
• Connector: Duplex LC
• OEM Equivalent: AT-QSFP28-LR4

Compatibility: The AT-QSFP28-LR4-TFO is TenFour Optics' compatible equivalent of the Allied Telesis AT-QSFP28-LR4, coded per order for your platform. Allied Telesis lists the AT-QSFP28-LR4 for use in 100G QSFP28 ports on: SwitchBlade x908 GEN2, x560 Series, and x950 Series. Add your switch model and OS release in the order notes, or email 10.4@tenfouroptics.com, and we confirm coding before it ships.

Tested & Proven: Every TenFour Optics part is coded, tested, and verified before shipment — see Tested & Proven.

Manufactured to MSA specification and verified on the bench before it ships. Backed by the GreenLights4Life® Limited Lifetime Replacement Warranty. In-stock items ship same or next business day.