I'm sure it works as you said but, after looking at the pictures, it looks like the connector is mini-USB??

How exactly do these connect to the Amiga?

I used to take Mega Drive controllers apart and move a few wires about.  IIRC the 'B' button is already connected, so I used the 'C' button as 2nd Fire.

Remember reading something back in the 90s about Mega Drive controllers.  They can apparently damage the Amiga cos of the way some lines are connected.  If you`re handy with a soldering iron it won be a problem  

Ah OK. Their image must be wrong as the enlarged sample picture doesn't show a DB9 that I've ever seen

A better view of the controller (the one on the right) is below ...

Awesome! If I didn't already have a bevy of NOS 6-button Sega pads, I'd surely have gone for this. Funny how the first pic though looked like it was terminated mini-usb. lol   Thanks for clarifying!

Oh yeah, and we should clear this up for sure.

2-button Sega Master System, 3-button and 6-button Sega MegaDrive/Genesis pads all work on Amigas for any game that supports controllers with one or two buttons. If you try to use a Sega pad in a game that needs a CD32 pad, button 1/B will act as the Red button, but button 2/C activates every button on the CD32 pad at once, including the Play/Pause button, which often causes the game to pause every time you press button 2/C.

You don't need to modify a Sega pad for it to work perfectly with all 1 and 2 button games. You can't modify them to act as CD32 pads unfortunately, but if you're handy with a soldering iron you can add a modification to make the A button on a MegaDrive/Genesis pad act as the UP direction. This makes them incredibly handy for playing platform games that use UP to jump, and racing games that use UP to accelerate.

Are you 100% sure about that?  I`m 99% sure the second fire button doesn`t work unless you mod the controller...

I'm with Tension here. Feeling rather retarded and having drunk many pints up to this very moment, I am quite sure a resistor or other line needs to be tapped in order to enable the 2nd fire button on a Genesis pad...

Something else that needs to be brought to attention Re: the 6-button pad... there is an I.C. resident, where - you need to hold in the 'Mode' button upon bootup that allows the gamepad to be "read" as a 'standard' 3-button Genesis pad. Sorry... MegaDrive... lol  (what a stupid name Sega!)