- You cannot add "ASUS ProArt Display PA279CV 27" 4K HDR UHD (3840 x 2160) Monitor, IPS, 100% sRGB/Rec. 709, Delta E < 2, USB-C DisplayPort HDMI USB Hub, Calman Verified, Eye Care, Tilt Pivot Swivel Height Adjustable" to the cart because the product is out of stock.