I'm running the Altirra 2.81 Atari emulator on Windows 10, and had not been able to get four joysticks working. I've seen lots of projects that had adapters for 2 joysticks, and one project for a 4 joystick adapter that was so poorly documented it could not be built from the instructions. I was really happy to see this adapter on Tindie, and it actually works! No issues with drivers, just plug & play. Ran it with my joystick test program, check. Ran it with MULE and it works! As for the documentation, it's minimal but of course they are selling to a techie audience. BUT, 1/2 sheet of paper instructions with micro print? Really? Spring for a full sheet of paper so the user can actually read it! In all fairness I knew how to set up a new USB device, which in Windows 10 is automagic. So I'm glad I bought this.