Power-saving and energy-saving USB hub with switch Each USB port has a switched USB hub. USB devices that are not in use at ordinary times can save electricity and are very environmentally friendly. By setting the unused USB device to the off state, the burden on the computer can be reduced and the notebook computer's operating time can be increased. The LED lights are attached to the switches of each USB interface, and the ON/OFF status is clear at a glance. Colour: Black Material: ABS Size: 8 x 8 x 3cm Hook type: Stick-on hook Model Number: Suitable for all Headphones Package Contents: 1 * USB4 port 2. Splitter with switch 1 * Headphone Holder Only the above package content, other products are not included. Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm. This product has seven extension USB ports and each output has a switch. Usb2.0 version; Power supply: USB 5V/2000mA;Support overload current and transient current protection. Transmission rate: 480Mbps, medium speed 12Mbps, low speed 1.5Mbps; : Win95 osR2/98SE/Me/2000/XP/VISTA, Linux2.4 and os8.5 or later 1 pcs USB4 Port 2 Splitter with Switch & 1 pcs Headphone Holder Wall PC Monitor Stand