Cisco QSFP-40G-CSR4 | 40G QSFP+ | 40GBASE-CSR4 | 850 nm | 300–400 m MMF | MPO-12 Condition:Used 40GbE QSFP+ active optical cable

40GbE QSFP+ active optical cable with integrated transceivers for short to medium in-rack/inter-rack links up to 7 meters

PCIe Gen5 x16 host interface and extensive hardware offloads (NVMe-oF/TCP

Cloud-managed Layer 2 access switch with 24x 10/100/1000BASE-T ports delivering PoE/PoE+ power (370W budget) and 4x 10GbE SFP+ uplinks for high-speed aggregation

ideal for call centers and hybrid work

Dual-ear on-ear wired headset with 3

Cisco QSFP-40G-CSR4 | 40G QSFP+ | 40GBASE-CSR4 | 850 nm | 300–400 m MMF | MPO-12 Condition:Used 40GbE QSFP+ active optical cableParallel optics QSFP+ delivering extended reach 40GbE over MMF. Ideal for leaf spine or aggregation links needing up to 300 m (OM3) or 400 m (OM4). Supports 4x10G breakout on compatible switches.