1、Use HDMI cable to connect the high definition source to the HDMI input port of the device. 2、Use HDMI cable to connect the HDMI output port of the device to the monitor. 3、Use the USB 2.0 TO DC 5.5MM power cable to connect the DC5V port of the device to a USB power source (such as a TV or USB power dock). 4、Reduce signal loss, get a better output signal. 5、Professional manufacturing, stable performance and high reliability. Condition: brand new Item type: 3 Port HDR HDMI Switcher Material: aluminium alloy Color: As picture shown Weight: Approx. 146g Remote control battery type: 1 x CR2025 cell battery Battery capacity: 150mAh Input channel: 3 ports Output channel: 1 port Video format: 480P/720P/1080P/2160P Dark color: 8/10 / 12Bit @ 480P / 720P / 1080P 8Bit @ 2160P Audio format: Dolby high definition / DTS high definition / Dolby Atoms / Dolby AC3 / DTS / LPCM Transmission bandwidth: 25~600MHz Transmission rate: 0.75~18Gbps Automatic switching: support 1 x Switcher 1 x Remote control 1 x Signal indicating line 1 x USB wiring 1 x Instruction