JL078A - Aruba 3810M 1QSFP+ 40GbE Module R0Q56A and backup servers that need

and backup servers that need redundant

You need multimode fiber → multimode transceivers

Serious PoE headroom: UPOE (60W/port) handles power-hungry APs

2 × 40G QSFP module(Other variants exist for mGig/25G in the 9300 ecosystem

JL078A - Aruba 3810M 1QSFP+ 40GbE Module R0Q56A and backup servers that needHPE Aruba JL078A Aruba 3810M 1QSFP+ 40GbE Uplink Module What it is JL078A is an HPE Aruba 3810M Series uplink module that adds a single 40 GbE QSFP+ port to compatible 3810M modular switches. This module provides high capacity uplink connectivity for aggregation and backbone links where increased bandwidth is required. Why buyers pick JL078A (plain English) High speed uplink performanceA 40 GbE QSFP+ port delivers a big jump in throughput for uplinks