USB 3.0 Hub USB HUB Splitter Multi USB 3.0 Hub Multiple 4/7 Port Hub Splitter Wi
①：1 x 4 Port USB 3.0 HUB. ②：1 x 4 Port USB 3.0 HUB & US/EU plug Power Adapter. ③：1 x 7 Port USB 3.0 HUB. ④：1 x 7 Port USB 3.0 HUB & US/EU plug Power Adapter. Hot plug & play USB device. USB Ports:4 or 7.