Quotation inner box:4 color box -Box size(LxWxH) (MM):460*200*30 -Carton size (LxWxH) (MM):470*330*420 -Net weight / CTN:18.6kg -Gross weight / CTN:21.7kg -QTY / CTN:20pcs -Q'ty/20' container: -Q'ty/40' container: -Key Switch: Membrane switch with tactile feedback -Number of hot keys:15 -EL power consumption:<150mA -EL light color:blue,green optional -Key tops :opaque-white translucent -Key Lifecycle:10 million times -Compatible:Windows 95/98/2000/Me/NT/XP -Hot keys: Multimedia Hot Keys: Play/Pause,Pre track, Next track , Volume down, Volume up, Mute Internet Hot Keys: WWW,E-mail,Favorite forward,backward,stop Application Hot Keys: My Computer, My Calculator, Sleep -Key Switch Operation Force:55g ?10g -Metal plate:yes -Connector:PS/2 ,AT, USB or USB+PS2 -Letters on keycaps:printing -Keyboard layout:104/105/106/107/109+17 hot keys -Approval:CE/ FCC -keyswitch travel:3.5mm?.5mm