Excellent monitor for picture quality, appearance and convenience (having a couple of USB ports on the side is very useful). Nicely boxed, too, and delivered on time as promised by CCL Computers.
Just one bug-bear and the only reason for four stars if you're connecting to a PC (rather than Apple), check the HDMI ports on your PC because the cable supplied with the monitor (DP > mDP) didn't fit my 2019 PC, which only has an HDMI port; an mDP > HDMI cable also didn't work. Fortunately, the monitor has a slot for a mini-HDMI, allowing a mini HDMI > HDMI cable to connect and spring the monitor into life.
One other practical point, if you're moving up from, say, a 1280 x 1024 pixel resolution monitor to the Dell U2717D 27" with its 2560 x 1440 pixels, you'll find icons are much smaller changing the sale to 125% brings things back to normal.