Fully Compliant with USB 2.0 Specification;Backwards Compatible with USB 1.1. 5 port USB 2.0 HUB. Maximum data transfer rate is 480 Mbps. All in one Card Reader. Support SD/MMC/TF/MS/XD/CF/MD all in Support Self-Powered Mode with optional external 2A AC adapter. Provide up to 500mA per port sufficient for diverse devices. Read and write flash memory card. Plug-and-Play. No driver installation required.