HP J8177D 1G SFP RJ45 Transceiver

Gigabit SFP RJ45 transceiver

The HP J8177D is a small-form-factor module that adds a single copper RJ-45 port to an SFP slot. It operates at 1000Base-T speeds over twisted-pair cabling up to 100 metres. Network engineers use it to extend switches or routers with a standard Gigabit Ethernet link without replacing the host device. The unit weighs 1 and measures .51 by 2.72 by .59 inches.

Suits copper uplinks not fibre

This module fits administrators who need a short-reach copper connection between rack equipment using Cat5e or better cable. It does not support optical fibre, so buyers who require long-distance or single-mode links must choose a different transceiver type. The transceiver is also limited to 1 Gigabit throughput, so environments that need 10 Gigabit or higher speeds should look elsewhere.

1000Base-T over RJ-45

The decisive specification is the 1000Base-T interface on a single RJ-45 port, which determines whether the module matches the cabling and speed requirements of the link. If the network design calls for copper Gigabit Ethernet within 100 metres this part will work; any other media or speed requirement means a different module is needed.