Check the listing for details. StarTech.com 4-Port USB 3.0 SuperSpeed Hub with Power Adapter - 5Gbps - Porta.... Condition: New. Listed at 50.39 USD. StarTech.com 4-Port USB 3.0 SuperSpeed Hub with Power Adapter - 5Gbps - Portable Multiport USB-A Dock IT Pro - USB Port Expansion Hub for PC/Mac (ST4300USB3) ✓ Free 60 Day Returns ✓ Free Express Shipping Description: USB 3.0 hub with seven ports. Features: USB HUB FOR THE IT PRO: Instantly add 4 SuperSpeed USB-A 3.0 ports from a single USB connection which will enable you to connect your USB peripherals (keyboard, mouse, flash drive) and use them simultaneouslyVERSITILE USE: This powered USB splitter can be used with or without the included external power adapter, offering the best of versatility and portability; When used with the external power adapter, the USB extender provides up to 900mA of power per portFAST SPEEDS: This IT-grade USB dock is small but mighty; It is SuperSpeed USB 3.0 compliant meaning it delivers data transfer speeds up to 5Gbps; For added convenience, the adapter is backward compatible with previous versions of USB (2.0 and 1.0/1.1)PLUG-AND-PLAY: With no additional software or drivers required, this portable USB 3.0 laptop expander hub provides a true plug-and-play solution; It is designed to work with any operating system, ensuring compatibility across platformsTHE IT PRO'S CHOICE: Designed and built for IT Professionals, this 4-port SuperSpeed USB 3.0 hub is backed for 2-Years, including free lifetime 24/5 multi-lingual technical assistance Product Details: BrandColor: BlackHardware Interface: USB 3.0Compatible Devices: Keyboards, Laptops, DesktopsTotal USB Ports: 4Product Dimensions: 2.68 x 3.74 x 0.91 inchesItem Weight: 1.94 ouncesItem model number: ST4300USB3Is Discontinued By Manufacturer: NoDate First Available: November 19, 2010Manufacturer: StarTech.comLanguage: EnglishCountry of Origin: China