4K is a theme at this years Consumer Electronics Show, and the ultra-high-definition resolution is nearly within reach. Vizio and Polaroid will sell 50-inch 4K televisions for $999, and the entry-level price of a 4K desktop PC monitor has also dropped to just $699 this week. Dell is the company selling a 4K monitor at that price: the Dell P2815Q. Its a 28-inch, 3840 x 2160 resolution screen with HDMI 1.4, multiple DisplayPorts, a bunch of USB ports, and the ability to charge a smartphone and display its content with MHL connectivity.