Amazon.com: Dell S2721QS 27 Inch 4K UHD (3840 x 2160) IPS Ultra-Thin Bezel Monitor, AMD FreeSync (HDMI, DisplayPort), VESA Certified, Silver : Electronics
Amazon.com: ViewSonic VP2756-4K 27 Inch Premium IPS 4K Ergonomic Monitor with Ultra-Thin Bezels, Color Accuracy, Pantone Validated, HDMI, DisplayPort and USB Type C for Professional Home and Office,Black : Electronics