Review on 🔌 Amiroko USB-C to Mini DisplayPort Adapter: 4K, 1080P Support for MacBook Pro 2016, MacBook 12", Alienware, Chromebook Pixel, LED Cinema Display/ Dell Monitor by Christian Bennett

This adapter doesn't work for me with two computers running Big Sur. I know the monitor and display adapter work well because I've been using them for years with my 10.13.6 iMac (27-inch, Mid 2011). MONITOR: Cinema Display (30" DVI, Late 2005) (M9179LL/A). DVI-to-MDP: Apple Mini DisplayPort to Dual Link DVI Adapter (model A1306) updated on iMac (Retina 5K 27" 2020) with Big Sur 11.4. See photo for an example of an unusable video ad. Also tried on MacBook Pro 13" 2017 Four Thunderbolt 3 Ports. Same result. Sometimes Cinema Display gets overlooked. Sometimes the power light would come on and then turn off (and turn on) again. CABLES: + MDP and USB display cables connected to a dual-link DVI adapter. + DVI adapter MDP cable connected to the Amiroko adapter (this product) which was connected to the iMac USB. C+ port DVI adapter USB cable connected to:++ (iMac) USB Type A port++ (iMac) USB Type A port on an external USB hub (connected to iMac Type A port ) USB-C adapter to USB-C++ port (MacBook Pro) than above because it doesn't have Type-A ports