The cost-effective Extralink SFP RJ45 1.25G 100M module is a powerful and affordable device that complies with the Gigabit Ethernet and 1000-BASE-T standards defined by IEEE 802.3-2002 and IEEE 802.3ab. The SFP RJ45 cartridge supports a data rate of 1000 Mbps over distances of up to 100 meters using a Category 5 Ethernet cable, providing a 1000 Mbps full-duplex data connection with 5-level pulse amplitude modulation (PAM). All four pairs in the cable are utilized, achieving a symbol rate of 250 Mbps for each pair. Extralink SFP RJ45 delivers standard serial ID information according to SFP MSA, which can be retrieved via the A0h address using a 2-wire CMOS EEPROM serial protocol. The physical IC can also be accessed via the 2-wire serial bus at the A0h address. The SFP RJ45 module is compatible with most Gigabit SFP ports on networking devices and features a fully metallic housing that ensures low electromagnetic interference (EMI).