I received one of these in February 2021 as an upgrade to a smaller Zepter monitor I bought a year earlier. My son wanted something decent to play with and it was affordable. Unfortunately, after 6 months, the monitor showed problems and Aopen asked me to pack it and ship it at my own expense. They also said that if they found it wasn't their problem, they would sue me. I tested it on another PC with the same results (but it took a while to go bad). Never returned to send at my expense. Will stay away from Aopen devices in future.
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