DVI EXTENDER 120 MTR – DIGITAL UNCOMPRESSED TRANSMISSION, CLEAR IMAGE AND STRONG ANTI-INTERFERENCE ABILITY: SUPPORT MULTIPLE RESOLUTIONS UP TO 4K*2K@30HZ; SUPPORT EDID TRANSPARENT TRANSMISSION, COMPATIBLE WITH DIFFERENT BRANDS OF DISPLAY DEVICES AND ABLE TO LOCK SCREEN. SUPPORTS TWO-WAY TRANSMISSION OF AUDIO. SUPPORTS TRANSMISSION OVER GIGABIT LAN. SUPPORT SERIAL PORT TWO-WAY TRANSMISSION.