usb mouse pad 1.Four USB 2.0 ports,USB multifunctional card reader5 in 1 2.Hot plug and play 3.Driverless (P&P) for Windows X usb mouse padusb mouse pad,mouse pad withe card reader,mouse pad with speaker(QH-0309)1.Four USB 2.0 ports,USB multifunctional card reader5 in 12.Hot plug and play3.Driverless (P&P) for Windows XP, 2000, 98SE, 4.Ear phone, microphone output connection capability, suitable ...