The Cisco Module GLC-T is a hot-swappable 1000BASE-T SFP transceiver module that provides Gigabit Ethernet connectivity over standard copper cabling.

The Cisco Module GLC-TE is a copper-based Gigabit Ethernet SFP transceiver, not a fiber optic module. It provides 1000BASE-T connectivity over standard twisted-pair copper cables (Cat5e or higher) with an RJ-45 connector, supporting speeds of 10/100/1000Mbps and distances up to 100 meters.