HP JL079A 3810M 2QSFP+ 40GbE Switch Module

The HP 3810M 2QSFP+ 40GbE Module (JL079A) is a purpose-built expansion card that slots into the Aruba 3810M Switch to deliver high-bandwidth uplink capacity. By adding two QSFP+ ports rated at 40 Gigabit Ethernet each, this module addresses the growing demand for faster switch-to-switch and switch-to-core connections in campus and data center access layer networks. It is particularly well-suited for environments where aggregated traffic from multiple access switches needs a fat pipe to the core or distribution layer.

Installation is straightforward—the module slides into an open expansion bay on the 3810M chassis and is recognized automatically, with no chassis reboot required thanks to hot-swap support. Each QSFP+ port can also operate in breakout mode using DAC or fiber breakout cables, splitting one 40GbE link into four independent 10GbE connections. This flexibility lets administrators tailor their uplink topology to match current needs while preserving an upgrade path as bandwidth requirements grow. As an official HP accessory, the JL079A is fully validated with 3810M firmware and covered under HP's networking support ecosystem.