Dell S2721QS 27 Inch 4K UHD (3840 x 2160) IPS Ultra-Thin Bezel Monitor, (HDMI, DisplayPort) Screen Size 27.0 inchResolution 3840 x 2160Color resolution 1.07 BillionsBrightness 350 cd/m2Contrast ratio 1300:1Frequency Response 4 msConnectors 2 x HDMI ports (ver 2.0),1 x Display Port (ver 1.2)Widescreen 16:9Weight 4.7 KgColor Black / SilverInput Video Compatibility N/AD-Sub NoDVI NoHDMI 2x HDMI v2.0Display Port 1x DisplayPort 1.2LED Backlight IPSPower Supply 100-240 Vac, 50-60 HzPower Consumption 52 WDimensions W x D x H 61.16 x 17.47 x 40.01 cmอ่านเพิ่มเติม