Apple Monitor Thunderbolt adapter
Presumably, this is the Apple 27&quot; Thunderbolt Display (the only Apple-branded display 'with Thunderbolt 1 cable coming out of the back').
Unfortunately, that display will not work with anything other than a Thunderbolt connection.
Will Thunderbolt Cinema displays work with Mini DisplayPort equipped macs?
Are there adapters to use Thunderbolt Display with non-Thunderbolt computers?
Fortunately, these are not made anymore, so you may be able to find a buyer that has more cash than displays and you can have fewer displays and more cash.