Support input resolution max 3840x2160@60Hz 4:4:4, HDCP 2.2, realize true 4K UHD Display. Support multiple video wall modes like 1x2, 1x3, 1x4, 2x2, 2x1, 3x1, 4x1 | Support 2x HDMI 2.0 and 1x USB 2.0 inputs. With 4 HDMI outputs (built-in audio), all input signals can be switched to 4 splicing displays | Support USB disk access and USB auto display when inserting USB; USB play max 3840x2160@60Hz / 4096x2160@60Hz videos (MP4, MOV, AVI, WMV, MKV, TS), Audio (MP3, WAV, FLAC), Picture (JPG, JPEG, PNG, BMP), Text (TXT) | With 3.5mm analog audio out and SPDIF optical audio out | With IR extension for 10m long distance remote control | Each output supports 180 degrees rotation for TV upside down installation | Support border adjustment and image cropping function, display without black edges. | Support setup of image brightness, sharpness, contrast, color temperature (standard-cool-warm-user)