Overall good experience with old Macbook upgrades
5 - 10 Minuten
I needed to upgrade memory and I wanted to put a 2nd hard drive in a old Macbook Pro so I can use a SSD hard drive for the OS, and keep my 750Gb SATA drive for data.
The memory upgrade was easy, having done it before. However, the SATA hard drive bay was the wrong one linked to the laptop / any repair articles. I had to get a RMA which was really quickly and easily obtained. And the staff was very helpful finding me the right enclosure to order.
Use Ifixit, they have always been great.