I never bother writing reviews, but this little device has fundamentally changed how I interact with my Mister FPGA. It's is the best compromise between original controllers and low latency, without sacrificing usability nor having to concern yourself with multiple SNAC adapters. I was able to use two of these with the 1.09 firmware (2.0 and 2.01 have bugs) to hook up 4 N64 controllers for Smash Bros. The only minor "annoyance" is needing to run the update script when you need to re-program the firmware for a new controller configuration but it only takes 1 minute and then you're good to go. It's easy to update both adapters one after the other two, just run the script twice with one adapter connected the other disconnected. Can't recommend this enough.