Features: Transform your viewing experience with 4 inout to HDTV port Converter, which seamlessly converts traditional into highly1080P HDTV output without loss. Not need to install driver,portable,flexible installation HDTV port output resolution optional among 480P,576P,720P,1080P. Equipped with a desktop controller, signal input channel can be switched with button,making it convenient to store the converter and the desktop. HDTV port output can switcher the aspect ratio and resolution to adapt to various HDTV Port displays. Specifications: Product Name：4 Port Switcher to HDTV port converter Switcher Model：M0438 Input port：4×RCA Output port：1×HDTV port;2×RCA Input resolution：Detect NTSC-443/NTSC-M/NTSC-J and more automatically:1.0Vp Impedance:750 HDTV Port output resolution：480P,576P,720P,1080P Aspect ratio key：4:3,16:9,16:10,FULL Size：about 190×68×39mm/7.48x2.68x1.54inch Package Includes: 1PC 4 Port Converter note: 1.This product requires power supply.Please use the power supply listed inside the packaging to power the product 2.This product work at a voltages of DC5V.Do not use higher voltages power supply. 3.This product support HDTV port 480P,576P,720P 1080P output,you can press the key to change the resolution you need.It also supports HDTV port aspect ratio 4:3,16:9,16:10,FULL output,you can press the key to change the aspect ratio you need. 4.Only support to change HDTV port output aspect ratio and resolution