Yosoo 3.5" Front Panel PCI-E To USB 3.0 4 Port Hub Combo+2.0 Card Reader 4 Port This is a 3.5internal USB 3.0 Host + card Reader. System support: Windows XP/Vista Built-in over current protection, can protect the devices an host itself effectively. 4 ports USB 3.0 and 6 slots USB 2.0 card reader DC big 4Pin socket supply power to each USB3.0 connector up to 900mA max, so all your USB devices can work properly