I bought one of the Timeharvest USB superguns awhile back. I haven't seen anyone post a compatibility list, so I figured I'd put together what I've tested. If anyone has any information to contribute, I'm glad to add it to my post. For context, I've tested on the USB Cbox 3.0; I don't know if the other models have different compatibility.
|Xbox One S (bluetooth)||No||2|
|Sega Saturn USB (original)||No||1|
|PS2 to Xbox 360 (wired)||Yes||1|
|PS2 to PS3 (wired)||No||1|
|8bitdo SN30 DIY (Saturn)||Yes||1|
|Brook Wingman SD (USB output mode)||Yes||2|