The USB-HUB7K-V2 is a USB2.0 Hub that complies with the Universal Serial Bus (USB) Specifications Revision 1.1 and works up to 5Gbps. It provides 7 downstream facing ports with standard A-type USB2.0 connectors.With a Terminus FE2.1 USB controller, it's backwards compatible with any one of the downstream ports connected to a USB1.1 or 2.0 compliant device.The USB-HUB7K-V2 also provides a unique feature that works in bus-powered mode without an external AC power adapter. Its very convenient for light power consumption USB devices to work in this mode. Just plug your device and start working. Also, the external 2-pin Terminal Block Connector is used for self-powered mode in case you need more power for the 7 downstream portsSince USB is the most popular external port for the devices to connect to PCs, the USB-HUB7K-V2 provides an ideal solution to expand your USB ports immediately and save your investment.