HP ZR22w 21.5-inch S-IPS LCD Monitor The 21.5-inch H-IPS panel is by LG Display (model number: LM215WF2) and sports a 1920 x 1080 pixel format, 8ms GTG response time The H-IPS panel was designed to improve energy efficiency The ZR22w is part of HP's Performance Monitors Input signal: DisplayPort; DVI-D; VGA I/O Ports: 5 USB 2.0