If you are a lover of computer science and electronics , you like to stay up to date with technological news and you do not miss any detail, buy LG Videowall 4K Ultra HD 55UH7F-H Full HD+ 49" monitor at the best price. Links: HDMI Ethernet LAN DVI-D x 1 USB USB 2.0 RJ45 DisplayPort RS232C x 1 HDMI 1.4 DisplayPort x 2 USB-A HDCP HDMI x 2 USB x 3 USB x 1 Plug-in Product: Yes Plug Type: EU Nest Resolution (px): 1920 x 1080 px 3840 x 2160 px Screen diagonal (cm): 139.7 cm 124.5 cm Type: Videowall Monitor Color: Black Response Time: 8 ms 1 ms Touch screen: No Voltage: 100-240V 100 - 240 V Screen: 49" Internal memory: 16 GB