butterfly USB hub 4 USB ports,480Mbps,delicate shape Excellent workmanship,USB 2.0port Useful in kinds of usb equipments butterfly USB hub 1.Classic ... choose injection. 2.Product is suitable for USB flash drives, card readers, USB mouse, USB keyboards and scanners, digital cameras, digital ... or plug support the swap, supports up to 127 USB devices, all good levels of quality electronic devices to ...