This might be a dumb question, but wanted to confirm. I just purchased the new Mac Mini base model with the i5. I didn't opt for the larger ram at purchase because of the cost for OWC Ram. Anyway, I was wondering if I could purchase 1 4GB stick of OWC Ram and use it with one of the 1GB sticks that comes with the machine, thus giving me 5GB total? Thanks in adavance!