备注： Features: Compact size with 4 downstream ports Self-powered capability to provide 500 mA per downstream port Over-current protection Complies with USB Specification 1.0 UL, CSA and FCC class B approved Specifications: Number of Ports: One upstream port with 6-foot cable. Four downstream ports with series A receptacles. Speed: Supports 12 Mbps full speed and 1.5 Mbps low speed devices. Power: Supports 500 mA per port. Comes with a wall-mount power supply
