Foscam 10 Feet 5V Black Universal Power Extension Cable Cords Compatible with 5V Power Adaper for Home Security Camera CCTV Surveillance Camera 5V 10 Feet Black Extension Cable Size: 3.5mm(outer dia.)*1.35mm (inner dia.) This cable will only work with power adapter with 1.35mm x 3.5mm plug and not other sizes. DC Power Adapter Extension Cable For CCTV Security IP Cameras Extend Power Cord from Your Camera's Regular DC Power Compatible with Foscam Security system R4, R2, FI9831P, FI9831W, FI9826P, FI9821P, FI9821EP, FI9821W, FI9816P, FI9818W, Fosbaby P1, FI8910W, FI8910E, FI8918W, FI8918E, FI8904W, FI8905W/E, FI8906W, FI8909W, FN3004H etc. indoor IP cameras and NVR