Addon XFP transceiver module (equivalent to: D-Link DEM-423XT) - 10 GigE - 10GBase-ER - LC single-mode - up to 24.9 miles - 1550 nm - TAA Compliant - for P/N: DES-7200-24 DES-7200-24G DES-7200-24GE DES-7200-24P DES-7200-48 DES-7200-48P