User's Manual of Led Display Video Controller VX4S/VX4www.novastar-led.com 5⑧: Flat mouth (Type A, female USB) is USB interface, which connects U disk;Square mouth (Type B female USB) is USB controlling interface, Communication with PC.5.2 Rear panelTips: In order to improve the user’s experience, the layout of interface may be adjusted a little, The pictureis only for reference.Input SourceAudio Audio InputDP DP InputHDMI HDMI InputCVBS1~CVBS3 3-Channel PAL/NTSC TV composite video InputsDVI -1~DVI-2 2-Channel DVI InputsVGA1~VGA3 3-Channel VGA InputsOutput InterfaceDVI LOOP DVI LOOP OutputMonitor -DVI OUT1 DVI Monitoring Interface 1Monitor -DVI OUT2 DVI Monitoring Interface 2LED Out 1、2、3、4 4-Channel LED OutputsControlling InterfaceETHERNET Network Control (Communication with PC, or Access Network)Type B, female USB USB Control (Communication with PC, or Cascade IN)Type A, female USB USB Cascade OUTPowerAC 100-250V~50/60HZ AC Power InterfaceTips:The two USB ( typeA) on front panel and rear panel are both forbidden to connect with PC directly.