Acer S277HK 27-inch 4K Monitor Display display has a Mac-like design with an aluminum frame and brushed-metal finish. The panel measures 20mm thick, while the edge around the screen is a mere 6mm, so the desktop very nearly goes from edge to edge. Unfortunately, the monitor sits quite low, and you can not adjust the height. The buttons for the on-screen controls are saved beneath the right side of the screen, rendering it tricky for navigating menus. The settings consist of useful options, though, such as preset modes for watching graphics and video clip, and a blue-light filter designed to ease eye-strain. We cannot fault the image quality. The S277HK uses IPS (in-plane switching) to provide excellent all-round viewing perspectives, along with bold colors and strong comparison that make many for the 3,840×2,160 resolution. The display screen also boasts a glare-reducing matt finish.
The Acer S277HK supports HDMI 2.0, so that it can display a 4K image with a 60Hz refresh rate (note, though, that Macs can currently only display 4K video at 30Hz over HDMI). Fortunately, the monitor includes two DisplayPort 1.2 interfaces – one each for full-size DisplayPort and Apple’s Mini DisplayPort/ Thunderbolt connection – allowing the latest Mac Pro and MacBook Pro models to display 4K video at 60Hz (older models don’t support DisplayPort 1.2). The built-in speakers work quite well, creating respectable sound quality and volume. There is a DVI port, but it is a shame there wasn’t a second HDMI, and the S277HK doesn’t offer any USB hub functionality, either. Connectivity could possibly be improved, nevertheless the S277HK offers excellent image quality, making it an attractive option for any 4K-hungry Mac user.