usb numeric keypad, jelly comb n001 portable slim mini number pad for laptop desktop computer pc, full size 19 key, big print letters - black jelly comb <b>specifications</b><br> <b>key specs</b><br> computer connectivity: windows<br> interface(s): usb<br> on/off switch: no<br><br> <b>compatibility</b><br> brand compatibility: pc<br> model compatibility: windows-based pcs<br> system requirements: windows xp, windows vista, windows 7, windows 8, usb port, internet connection<br><br> <b>general</b><br> color: black<br> <b>dimension</b>height:4.92 inch <br> width:3.23 inch <br> weight: 100g<br>