PATENTNUMBER:ZL200930167192.51.USB2.02.maxtranmittingspeed480m/s3.nodrive(excl.win98se),supportwindows98,se/me/2000/xp/vista,macos8.6orabove.4.displaydiskformats:dvd-r/rw,dvd+r/rw,dvd-rom(single/doublelayer)videodiscs,cd-da,cd-ro,cd-romxa,cd-1,photocd,videocd,cdextra,cd-text,cd-r,cd-rw.5.cd-rommaxspeed24x,cd-rmax,speed24x,cd-rwmax.speed10x,dvd-rommax.speed8x,dvd-rmax.speed8x,dvd+rmax.speed8x,dvd-rwmax.speed4x,dvd+rwmax.speed4x,canrecordd-9dvd-ram.6.size:170*136*22(mm)