HumanCentric VESA Mount Adapter Compatible with Acer Monitor R40HY Abmidx, G247HYU, G277HU, XG270HU, Mounts Only These Specific Monitors : Amazon.co.uk: Computers & Accessories
Create a 4K Dual Monitor Setup With Raspberry Pi
2 x 24"-Acer LG Dell HP-Dual Screen Cheap Gaming LED LCD Monitors VGA DVI Ports | eBay