Features: 1.PCI to multiple USB port conversion: Provides 4 USB 3.0 port, meet your extending requirements, and simultaneously compatible with USB2.0 and 1.1. 2.High speed transmission: 1.5Mbps/ 12Mbps/ 480Mbps/ 5Gbps transmission rate support, ensure fast and stable data transmission. 3.Good contacts and suitability: compatible well for PC with PCI-Express slot, and support Windows XP / Vista/ win7/ win8/ win10 and more system. 4.Built-in 4-pin power connector, which is available for some extra power system. 5.Hot swapping capability: Allows you to connect/ disconnect devices without shutting down the system. specification:Description: This is a professional PCI-E to USB 3.0 extension board adapter, which provides super-fast and high-capacity data transfer solution for you. High quality module board allows super durability and performance, compatible well with your PC, plug and play. PCI to multiple USB port conversion: Provides 4 USB 3.0 port, meet your extending requirements, and simultaneously compatible with USB2.0 and 1.1. High speed transmission: 1.5Mbps/ 12Mbps/ 480Mbps/ 5Gbps transmission rate support, ensure fast and stable data transmission. Good contacts and suitability: compatible well for PC with PCI-Express slot, and support Windows XP / Vista/ win7/ win8/ win10 and more system. Built-in 4-pin power connector, which is available for some extra power system. Hot swapping capability: Allows you to connect/ disconnect devices without shutting down the system. High-quality circuit module board: Efficiently avoid from corrosion and abrasion, durable to use. Easy to use, plug and play. s: Color: Black Transmission Rate: -Low Speed: 1.5Mbps -Full Speed: 12Mbps -High Speed: 480Mbps -Ultra High Speed: 5Gbps Interface: PCI-E to USB 3.0 USB Port Quantity: 4 Applicable Devices: PC with PCI-E slot Support OS: Windows XP / Vista/ win7/ win8/ win10 Size: Approx. 120 x 67 x 21mm / 4.7 x 2.6 x 0.8in Package Size: 145 x 110 x 15mm/ 5.7 x 4.3 x 0.6in Package Weight: 80g Package List: 1 x PCI-E to USB 3.0 Extension Board