Features: USB 3.0 Port Four standard USB 3.0 ports, ensure fast transfer rate up to 5Gbps. High quality main control chip Delivers low heat, fast speed and stable operation, to eliminate interferenceto the greatest extent. Interface Protection & Solid Capacitor Each interface is equipped with independent interface protection to allow power dump in the case of short circuit and over-current of USB device, to protect the computer from being damaged, and automatically restore when faults remove and with an independent solid capacitor to ensure stable power supply to each interface, with high temperature resistance. With power supply module Provides 2A power supply, no external power supply required. Stable Performance PCB plate ensures high stability of electrical performance. Comes with a 2U Low-profile bracket Low-profile bracket provides the option for installation in small size HTPC case. Gold finger Features good conductivity and strong oxidation resistance, to ensure more stable transmission. Specification: Item: Expansion Card Model: U3N04S-BG Chip: NEC720201 Bus Type: PCI-E Compatibility: For large and small PC case Port: 4 * USB 3.0 System Supported: For Windows XP/Vista/Win 7, Win 8, Win 10 OS Slots: PCI-E 1x/4x/8x/16x slots Item Size: 12 * 7.5cm / 4.7 * 3inch Item weight: 50g / 1.8oz Package Size: 14.5 * 12.7 * 2.5cm / 5.7 * 5 * 1inch Package weight:104g / 3.7oz Compliant with: PCI Express Revision 2.0, Universal Serial Bus USB 3.0 Revision 1.0, compatible for USB2.0 and PCI-Express 1.0. Package Include: 1 * Expansion Card 1 * Bag of Screws 1 * Driver CD 1 * Low-profile Bracket