Amazon Basics 4 Port USB to USB 3.0 Hub with 5V/2.5A power adapter Description Amazon Basics 4 Port USB to USB 3.0 Hub with 5V/2.5A power adapter From the Manufacturer Amazon Basics Features: Package includes: 1 USB 3.0 4 Port Hub / 1 5V/2.5A Power Adapter / 1 built in 9 inch USB 3.0 cable / 1 Owner's Manual Compatible with USB 3.0 and backwards compatible with USB 2.0 Support Low speed (1.5 Mbps)/ Full speed (12 Mbps)/High speed (480 Mbps)/ Super speed (5 Gbps) Support auto switching between self-power and buspower mode Check your device loading current when used for charging (e.g. iPads/Tablets) or for high-power devices (e.g. hard drive); insufficient current may lead to slow charging or other failure Max output per port is 900MA; max output across all 4 output is 12.5W(5V/2.5A) For maximum output, apply power adapter Product Details: Color: Black Hardware Interface: USB, USB 3.0 Compatible Devices: Tablets Total USB Ports: 4 Item model number: ‎HU3641V1 Operating System: ‎Windows Vista Item Weight: ‎5.7 ounces Product Dimensions: ‎3.57 x 1.59 x 0.63 inches Item Dimensions LxWxH: ‎3.57 x 1.59 x 0.63 inches Color: ‎Black Voltage: ‎5 Volts Country of Origin: ‎China Is Discontinued By Manufacturer: ‎No Date First Available: ‎September 1, 2013