What is this?

[wrcooke at wrcooke.net]

> On May 15, 2019 at 1:21 PM Electronics Plus via cctalk <cctalk at classiccmp.org> wrote:
> 
> 
> https://cdn.discordapp.com/attachments/486774619186135050/578282338375565322
> /JPEG_20190515_130651.jpg
> 
> Can anyone identify/explain this to me? The same company made joysticks and
> other peripherals for pre-PC systems.
> 
>  
https://picclick.com/TG-Products-Select-A-Port-Multiple-Game-Port-Device-252787161706.html