1.Relay mode: wireless to wireless: After receiving the wireless signal from the wireless router, the repeater re-transmits the wireless signal, so as to achieve the effect of amplifying and extending the coverage. Compatible with all wireless routers (need to know the user name and password of the wireless signal), the setting is very simple. The product comes with instructions. Mobile phones, computers, tablets can be set, only need to set up once all wireless devices can be used. 2. AP mode: Wired to wireless: When cable is connected to the computer, you can directly access the Internet without dialing, such as hotels, apartments, rental houses, offices, sharing broadband with neighbors, etc., just plug cable that has been connected to the repeater port can convert wired to wireless use. No need to set up plug and play. 3. Wireless 300Mbps wireless transmission rate, wifi signal enhancement amplifier, fast speed, high efficiency, mini portable, appearance, the shell is made of the same ABS+PC material as products, simple and practical, drop resistance, heat resistance, flame retardant, built-in Power supply, simple operation! size:10 x 5 x 3cm Material:ABS+PC colour:black Package Contents: 1 x USB repeater 1 x network cable 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.