do all size memory cards work in my mac book pro?

jimneedshelp wrote:

memory cards

Depends on which MBP. SD card slot or SDXC card slot. Is that your question?

http://support.apple.com/kb/ht3553

If it physically fits, all capacities will work.

Ciao.

An SDXC card slot is capable of reading SD and SDHC memory cards. An SD card slot is only capable of reading SD memory cards.

You see your Mac tech specs here:

http://www.everymac.com/systems/apple/index-apple-specs-applespec.html