|What Ray said. It's not a "slot" for plugging in cards. Rather they are sockets for plugging in ribbon connectors. I'm using one on my V2 500 for the ethernet adaptor. |
The V4 has 3 such adapter sockets on it's board. (see the picture here: EXTERNAL LINK it's the 3 rectangular black sockets on the right side)
The hope is that at least the following can be added through these sockets:
1) floppy drive interface(s)
2) Wifi adapter. (similar to how we're doing ethernet on the V2 now)
3) ??? What else would folks like to see? Serial Ports? Parallel Ports? Midi interface?
If it's SPI then it should be possible to do stuff like interface to a RasPi or Arduino...
But yeah, drivers would need to be written...