Finding suitable SSD for my MacBook Air I have a MacBook Air (mid-2012, MacBookAir5,2). I'm really far from terminology of this subject, I have no idea what is flash memory and don't know if all MacBook SSDs must have a flash memory supported SSD drive. I see that there are some suitable SSD upgrades for my MBA on OWC. But I want to buy an SSD from a local technology market. So exactly which specs should I look for to understand which SSDs suitable with my MacBook Air.

How can I be sure, if I buy SSD it will work with my MBA?
Your MacBook Air (13" I presume) does not use a standard SSD drive in the 2.5" form factor that many others do. Instead it uses an SSD with a bare SATA connector on the end. It looks a bit like a standard memory DIMM.

I generally buy upgrade parts for my Macs via Other World Computing. there are others that are just as good, if you prefer, but this SSD upgrade would work for your system.

I would review the installation instructions to make sure it is something you feel comfortable doing.