Maximum PC: enovo on Monday announced four new all-in-one (AIO) desktop PCs, one of which the company claims is the industry's first 29-inch super-widescreen AIO with a 21:9 aspect ratio and 2560x1080 display resolution, the B750. In addition to being super wide, the B750 boasts a frameless In-Plane Switching (IPS) panel and a built-in JBL 2.1 speaker system with a 20W subwoofer and Dolby Home Theater.