SNES controller to NES adapter

With this adapter, you can use an SNES controller to play games on your NES. Description If you want to play games on your NES console but have a strong preference for SNES controllers, or own many cool but snes-only arcade sticks you'd like to use, this adapter is exactly what you need.Specifications: Supports SNES controllers. (Official Nintendo and most 3rd party) Length: Approximately 5ft. Button mapping: SNES B: NES A SNES Y: NES B SNES D-Pad: NES D-Pad SNES Start/Select: NES Start/Select Latency: None![1] Zero latency is actually possible for this adapter since it is a simple "wiring only" adapter. [1] Ignoring of course the speed of electricity in the extra 5ft of cable. Assuming a velocity factor of 42% the speed of light, this means a latency of about 24ns (0.0000000240 second). Of course it does not matter at all.