iiyama ProLite H511S-B2U, ProLite. Display diagonal: 510.5 mm (20.1 "), Response time: 8 ms, Display brightness: 300 cd/m². VESA mounting interfaces compatibility: 100 x 100 mm, Swivel angle: 35 - 35 °, Tilt angle: -5 - 35 °. Power consumption (standby): 2 W, Power consumption (typical): 55 W. Width: 446 mm, Depth: 70 mm, Height: 375 mm. Windows operating systems supported: Windows 95 / 98 / 2000 / ME / XP