My friend has a first-version MacBook that feature the Intel Core Duo 1.83GHz. now she upgraded the RAM from 512MB to 2GB after i told her to do so, and i've plan to buy a new HDD for her (now only have 60GB) to be a 120GB. but the problem is the interface that use in MacBook for HDD is it SATA I or SATA II ? i've read some forums that say shouldn't worry about it (SATA) but since it the first version of MacBook so i need to be sure before i give it to her for a present. Thank you in advance!