... usb port hub,4 port usb hub,usb 2.0 hub usb 2.0 4 usb ports SMT IC usb hub,usb ... port hub,4 port usb hub,usb 2.0 hubusb 2.04 usb portsSMT IC a) Plug - and - ... - current detection and protectione) Fully compliant with USB 2.0 specifications, backwardly compatible with USB 1.1f) Supports up ... speed devicesg) Supports data transfer rate at 1.5 / 12 / 480Mbpsh) Adds 4 USB 2.0 hi - speed ports usb hub ...