SIO2PC/10502PC Dual USB and Mac (doesn't seem to work)

Hello guys

I'm new to this whole SIO2PC thing and haven't really used any emulators (except for a short peak at some software).

A while ago, I bought atari8warez' SIO2PC/10502PC Dual USB interface, but can't seem to get it to work. If I plug this thing into the iMac, should I see some icon appearing in the navigation column?

Sincerely

Mathy