The Nortel AA1403005-E5 10GBASE-SR SFP+ Transceiver is a high-quality optical transceiver designed for use in various networking applications. With a maximum data rate of 10 Gbps, this transceiver features a 20+4 pin connector and is compatible with Avaya and Nortel equipment. The compact SFP form factor makes it easy to install and use, providing reliable and efficient data transmission for your network.