Acer X203HBb. Display diagonal: 508 mm (20 "), Response time: 5 ms, Display brightness: 300 cd/m². VESA mounting interfaces compatibility: 100 x 100 mm. Power consumption (standby): 2 W, Power consumption (off): 1 W. Width: 540 mm, Depth: 134 mm, Height: 411 mm. Certification: UL, CUL, TUV/GS, T-Mark, ISO9241-3/-7/-8, FCC/B, VCCI, CE, TCO03, C-tick,BSMI,WHQL, ISO 13406-2