buying RAM

will this work in a 15" MacBook Pro?

Newegg.com - Crucial 2GB (2 x 1GB) 200-Pin DDR2 SO-DIMM DDR2 667 (PC2 5300) Dual Channel Kit Laptop Memory Model CT2KIT12864AC667 - Laptop Memory

Depends on which model MacBook Pro you have.

Does yours use DDR2 or DDR3?

You can check yours in System Profiler or find your model here.

Which year\model of 15" MacBook Pro do you own? That memory from NewEgg is for an older model of MacBook Pro. Newer models use faster memory (DDR3).

If you don't know what you need, go to Crucial dot com and use their memory tool.

Regards.

mine is DDR2

edit: Apple MacBook Pro "Core 2 Duo" 2.5 15" (08) Specs (MB134LL/A) <-specific model