ViewSonic (TD2420) – VIEWSONIC 23.6″ Wide Screen 16:9 LED 2-point touch monitor Best Resolution: 1920 x 1080 {Full HD} Brightness: 270cd/m2(Typ.) Contrast Ratio: DCR 20,000,000:1 (Max.), 1000:1 (Typ.) Response Time: 5ms (Typ.), Viewing Angel: H:170o V:160o Input: Analog (D-sub) / Digital (DVI) / HDMI, USB x 2, Stand: Tilt Special Feature:Speaker (2w x 2), HDCP

ViewSonic (VG2239M-LED) – VIEWSONIC 21.5″ Wide Screen 16:9 LED monitor (black color ) Best Resolution: 1920 x 1080 {Full HD} Brightness: 250cd/m2(Typ.) Contrast Ratio: DCR 20,000,000:1 (Typ.), 1,000:1 (Typ.) Response Time: 2ms (GTG), Viewing Angel: H:170o V:160o Input: Analog (D-sub) / DVI-D/ Display Port ; USB Connector; Stand: Height adjustment (135mm), Swivel (360?X), Tilt Special Feature: Speaker (2w x 2), ClearMotiv II, sRGB. 4:3 in wide, support HDCP