Super Pad 64 third party Nintendo 64 controller.
I tested this unit and the analog stick did not respond correctly. In addition the A button had to be pressed harder than normal to activate.
The "slow" button lit up when activated but not the auto button. The Rumblepack/Memorycard combo unit is untested.
This controller was stored in an attic. I did my best to wipe it down with rubbing alcohol but please be aware of yellowing on the shoulder buttons and around the analog stick.