This product is either discontinued or we cannot get that from suppliers.
Dell C5522QT 4K Interactive Touch LED-backlit UHD 60Hz Monitor, Screen 54.64" 3840 x 2160 IPS-Type LCD, Gamut 72% CIE1931, Brightness 350 cd/m² (Typical), Viewing Angle (H x V) 178 x 178°, Aspect Ratio 16:9, Contrast Ratio 1300:1, Input 3 x HDMI 2.0 – Audio, Video (Side), 1 x DisplayPort 1.2 – Audio, Video (Side), Output 1 x 1/8" / 3.5 mm – Audio (Side), Control RS-232C via DE-9/DB-9 Input, AC Input 120 to 230 VAC, 50 / 60 Hz.
The Dell C5522QT 55" Class 4K UHD Touchscreen Conference Room IPS LED Display. It supports up to 20 simultaneous touch points for engaging, collaborative meetings.