Preserve copper connectivity where fiber is unnecessary or unavailable with this TAA-compliant SFP transceiver. The AddOn GLC-T-AO delivers 10/100/1000Base-TX over an RJ-45 interface, giving network teams a straightforward way to add or replace copper uplinks in SFP-capable switches and routers. This module is a strong fit for access-layer ports, temporary network extensions, and mixed-media environments where the installed cabling plant is already twisted pair. Hot-swappable operation helps reduce maintenance disruption, while Cisco GLC-T compatibility supports fast replacement in standardized environments. For teams managing procurement across public sector or compliance-sensitive accounts, TAA compliance adds another layer of buying confidence. Compared with optical transceivers, a copper SFP can be the more economical answer when the link distance is short and the cable plant is already in place. That makes this module valuable not because it does everything, but because it does one job well: deliver dependable Gigabit Ethernet over RJ-45 in a compact SFP form factor.