Compatible SFPs : GLC-T, GLC-LH-SM, GLC-SX-MM, GLC-ZX-SM Compatible CWDM SFPs : CWDM-SFP-1470, CWDM-SFP-1490, CWDM-SFP-1510, CWDM-SFP-1530, CWDM-SFP-1550, CWDM-SFP-1570, CWDM-SFP-1590, CWDM-SFP-1610 Compatible with : Cisco 1921, 1941, 1941W, 2901, 2911, 2921, 2951, 3925, 3945, 3925E, 3945E, 1841, 1861, 2801, 2811, 2821, 2851, 3825, 3845 Model Number : HWIC-1GE-SFP Part Number : HWIC-1GE-SFP