MultiSync MA551 - 55� LED LCD Public Display Monitor, 3840 x 2160 (UHD), Wide Color Gamut, 24/7, 500 cd/m2, Landscape/Portrait, HDMI In x2/Out, DisplayPort In x2/Out (SST/MST), Audio Mini-Jack Out, Full Bidirectional Control through RS232C and LAN In/Out, Intel Smart Display Module - Large PC with Intel Celeron installed (SDM-VICW-IS), Integrated Audio Amplifier, Full Input Detect Functionality, USB Hub, Metal Chassis, 3 Year Commercial Warranty, Stand not included (ST-43M or ST-401)