Move 100 GbE traffic farther without changing the architecture around it. Aruba JL310A is a QSFP28 LR4 transceiver designed for single-mode fiber deployments that need long-reach connectivity with a standard LC interface. With support for 100GBase-LR4 and up to 10 km reach, it gives network teams a clean path for high-bandwidth uplinks between buildings, core layers, and distributed data center zones. This module is built for environments where distance, optical consistency, and port efficiency matter. The LC connector simplifies integration into established SMF plant, while the QSFP28 form factor keeps density high on modern switching platforms. For teams standardizing on 100 GbE, it provides a practical balance of reach and deployment simplicity. Compared with shorter-reach optics, JL310A is the right choice when the link must cross a campus or connect remote network rooms without introducing extra conversion layers. It is a premium fit for infrastructure teams that need dependable 100 GbE transport and want to preserve headroom for future traffic growth.