Most of the reviewers below said they couldn't get 4k resolution. The main problem is that your PC/Mac supports 4k resolution and your HDMI adapter/cable supports 4k resolution. I had a problem with my HDMI adapter and couldn't get 4k resolution. As soon as I switched to another I had fantastic 4k resolution.
LG 27MP59G-P 27 inch Monitor with FreeSync, 75Hz Refresh Rate, and 1080p HD Resolution
93 Review
Samsung Flat Monitor Super Slim Design 27", 1920X1080P, 75Hz, Flicker Free
112 Review
Dell SE2416HX Screen LED Lit Monitor 23.8", 1920X1080P, HDMI
93 Review
HP 24Uh 24" Backlit Monitor 1920x1080p, 60Hz, LCD with HD Resolution - K5A38AA#ABA
101 Review
🎥 Logitech C270 Webcam: Crystal Clear Video and Superior Quality
183 Review
Enhance Your Visual Experience with Logitech C260 Webcam
78 Review
💻 Get Amazing Video Quality with Logitech HD Pro Webcam C920 (Discontinued Edition)
83 Review
50AA2500 EBL Individual Battery Charging System - Rechargeable Batteries
56 Review