The SATA III version isn't directly compatible with older MacBook series;
but some build versions could see a SATA III, backward compatible to v. II.
• SSD Upgrades for Apple MacBook (2006 - 2010)
https://eshop.macsales.com/shop/ssd/owc/macbook/2006-current
• Upgrades Guaranteed to work with your Mac - by OWC
Note this link ^ can be useful to find most upgrade parts for Macs.
Of these examples, the best possible of compatible product is OWC's.
See their 'installation instruction videos' they're free to use.
And once adapted for use, the format should remain HFS+ ~ While set
to use 'Trim' with SSD, is a usual instruction; for these to work with Mac.
Other models may differ a bit, from your build year model compatibility.
Good luck & happy computing!🌞🎣