Model A1181: 1.83, 2, 2.1, 2.13, 2.16, 2.2, or 2.4 GHz Core 2 Duo processor

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Ok, I've been looking round for a while for a hard drive upgrade and what other people have used to get the best performance out of the MacBook blah blah blah. I got very confused when I realised that basically every MacBook up until now runs on SATA of which made no sense to me atall. But I have just been reading that it is possible to use SATA II Drives in MacBooks using jumpers across connections but it will decrease the performance. Can someone please explain?

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Just plug it in, it'll run fine with no alterations.

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SATA, and SATA II Are backward compatible. If you use a SATA II drive on a SATA I bus, It will just operate at 300MB/s (SATA I Speed) and a SATA I drive on a SATA II Bus will operate at 300MB/s, a SATA II drive however will run at 600MB/sec (SATA II Speed) on a SATA II Bus.

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Joshua will be eternally grateful.
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