10GBASE-ER-AO - AddOn Extreme Compatible XENPAK Transceiver

XENPAK transceiver module (equivalent to: Extreme 10GBASE-ER) - 10 GigE - 10GBase-ER - SC single-mode - up to 40 km - 1550 nm - for Cisco 7600, 7600 SIP-200; Catalyst 3750, 3750G, 6500; Supervisor Engine 720