About this item Input: 100-240V 50-60Hz; Output: 19V 7.1A 135W; Connecter size: 7.4 mm outer diameter / 5.0 mm inner diameter (Note the reference image interface) Compatible with DC7800, DC7900, DC8000, DC8100, DC8200, DC8300 Ultra-Slim Desktop Computer systems, as well as fits 397747, 647982, 648964, PA-1131-08H, 481420-001, 463557, 592491-001, 437343-001, dv4, dv5, dv6, dv7, 397803-001, 437343-001, 397747-001, PA-1131-08, Elite Ultra-Slim 612750-001, NC Series NC4400, NC6300, NC6120, NC6110, NC6400, NX Series NX6115, NX6125, NX6320, NX7400, NX8420, NX9420, NW Series NW8440, Tablet PC: TC4400; 8200 Elite Ultra-Slim Series PC, TouchSmart Desktop models 600-1010, 1030, 1040, 1047, 1050, 1052, 1100T, 1120, 1130, 1135, 1140, 1151, 1200T, 1205, 1205T, 1215, 1220, 1240, 1300, 1305T, 1350, 1352, 1367, and 1000T. Dimensions: 8.78 x 6.1 x 1.93 inches.