Features: brand new and high quality High quality for NEC D720201 Chip.Super fast and high-capacity transfer solution, stable and reliable Fully for PCI for Express Base Specification Revision 2.0 Supports simultaneous operation of multiple USB 3.0, USB 2.0, and USB 1.1 devices Built-in 4-pin power connector for receiving for extra power supply from the system Supports for Windows 7 (32-bit/64-bit), for Windows Vista (32-bit/64-bit), for Windows XP for Windows XP/2003/Vista/2008/7 and for Windows 8/10 32 or 64 Bit With 4pcs power moduel, not need for extra power supply. Specifications: Model: PCI-E -USB3.0 Riser Expansion Chipset: for Nec chip NEC720201 Interface Type: PCIE Port: 4 Ports Usb3.0 Size: approx 120 x 83x77mm/4.7X3.27x3.03in for Comply with: universal serial bus 3.0 standard. Usb 3.0 Speed : 5Gbps and is backward for usb 2.0/1.1. Power: 2Ax4=8A Package Includes: 1PC x PCI for Express To 4-Port USB3.0 Expansion Card note: Please allow 0-1cm error due to manual measurement. pls make sure you do not mind before you bid. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you!