Move a 100 Gbps optical signal across a duplex LC single-mode fiber path up to 10 km. Axiom Memory AXG104943 is a QSFP28 LR1 optical transceiver operating at 1310 nm, providing a compact optical interface for long-reach point-to-point network links. Its QSFP28 form factor installs in equipment that accepts QSFP28 optical modules. Duplex LC connectivity uses two fiber strands: one transmit path and one receive path. This lets network teams deploy the link over standard duplex single-mode fiber infrastructure rather than multi-fiber ribbon cabling. The 10 km reach suits building-to-building connections, campus distribution paths, and longer equipment-room interconnects where short-reach optical modules cannot cover the required distance. The LR1 optical architecture distinguishes this module from short-reach and parallel-fiber optics by carrying the 100 Gbps link over a 1310 nm single-mode optical path with duplex LC termination. The EX designation identifies the extended-temperature variant, making it relevant where optical hardware operates beyond typical climate-controlled network rooms. Select this transceiver when the installed host interface is QSFP28 and the physical fiber route is duplex single-mode fiber.