2 USB3.0 HUB (HOST),transfer speed up to 5.0Gbps,downward compatible with USB2.0 and USB1.1 built-in PCI-E interface (no need to purchase the USB3.0 PCI-E card),as long as your motherboard has PCI-E interface will be able to your computer in one step to upgrade to USB 3.0 * Front interface:e-SATA port,the transfer speed up to 3.0Gbps * USB2.0 interface transfer speed up to 480Mbps * Audio ports,front speakers,and microphone to solve the inconvenience of your chassis behind the plug;More than 1 card reader,support SD/MMC/CF/MD,the MS/XD,TF/M2 series storage memory card * Front port:power 12V/5V output(SATA 15PIN Power Interface)standard round 4PIN turn to 15PIN power cable directly to the SATA hard drive power supply