SC-3000 (NTSC) and Card Catcher

[Gapporin]

Here's the SC-3000:

http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=8180475791

(Yes, this is worthy of post; most, nay, all of the SC-3000's I've seen are from Britain/Australia, and therefore, PAL.)

And here's the Card Catcher:

http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=8180475827

Is the Card Catcher just a simple pass-through device that allows you to play cards in the cartridge slot? Or is there more to it?

EDIT: Also found a SG-1000, for the curious (also NTSC, by the way):

http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=8180475487

[y-bot]

you are correct about what the Card Catcher is. I got burned on a John Sands PAL SC-3000 that I bought from Asia somewhere off of ebay. I think I have the SG-1000 and the Sega Mark III but not the SG-1000 II or the NTSC SC-3000.
y-bot