Product Description: Functionally charging and transferring data simultaneously, 4-port USB 3.0 hub supports transmition rate up to 5Gbps. For low line resistance and thermal shielding, the constant power supply and signal transmission ability reach up to twice what the USB 2.0 can provide. On the basis of FCC, CE, ROHS verification, bus powered mode can support plug and play safely to work stably may you enjoy effective and comfortable life with ease, validated to be the reliable and dependable companion. Package includes: - 1 x USB 3.0 Hub - 1 x User Guide - 12 month hassle-free warranty Power Usage Alerts: To ensure a stable connection, don"t use this hub with high power consumption devices (those exceeding a combined current of 0.9 Amps among all ports) such as some large-capacity hard drives. This hub is not meant to serve as a stand-alone charger. It is not compatible with iPads or any other devices with irregular charging requirements. Note: USB 3.0 devices, hard drives in particular, can occasionally interfere with Wi-Fi and Bluetooth connection operating in the 2.4GHz band. It is suggested to place this hub and other USB 3.0 devices attached away from where wireless receivers are located ( for example, rear of your Mac near at the hinge of your screen on your Apple Mac computers ). About us: This product is sold exclusively by BSCstore. Only buy from BSCstore to get genuine MoKo(TM) products with Lifetime warranty and superb customer service. MoKo is registered trademark of BSCstore and is exclusively distributed by BSCstore on Amazon. MoKo trademark is protected by US Trademark Law.