... -port USB Hub with 1.1 or 2.0 version2.Clock(12/24hour) with alarm,date,timer,temperature(C/F) functions,powered by ... 3pcs AAA battery(Excluded)4.Push LCD lightly to lit up background ... windows98/2000/XP/Vistar7.Wide used for USB products,such as U-disk, SD card, USB mouse\keyboard,MP3,MP4,digital camera ...