How many channels have digital input?

Hi, I want to know how many channels have the digital input of the intel mac mini. I have an digital input with six channels and I would like record in different tracks in garageband or other program. It's possible?
Thanks and excuse me for my english.
Mac Mini (Intel Core Solo)   Mac OS X (10.4.6)  

Welcome to the Apple Discussions!
I don't use GarageBand much, but I did a couple of searches. If you search the GarageBand forum, it is possible to import/record more than one or two tracks at a time. In fact, people have recorded six tracks with a USB/MIDI interface. HOWEVER, there is more to consider than just the ability of the software to do this. The processor and the hard drive will have to keep up. From what I found there, it seems the processor and hard drive of the Mac mini will not be able to keep up with six tracks. Apple uses some laptop components, like hard drives, to keep the Mac mini small. One sacrifice of smaller components is lower performance. If you're going to work on projects like that, the folks in the GarageBand forum might recommend an iMac. Your topic might be better suited for that forum, since digital optical audio for the Mac mini is brand new, there might not be many people here with much experience.
-Doug

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