PART 1: Introduction of 2.5 SATA and M.2 SATA
PART 2: INSTALL 2.5 SATA
PART 3: INSTALL M.2 SATA
What is a 2.5 inch SSD 
A 2.5-inch internal solid state drive, or SSD, is superior in just about every way to a 2.5-inch internal hard disk drive, or HDD. The SSD requires less power, generates less heat and is quieter, faster, more reliable and more durable. It's also much more expensive.
What is M.2 SATA ssd hard drive M. 2 drives can come in SATA versions (like the Crucial MX500 M. 2 for example) and NVMe versions (like the Samsung 970 Pro/EVO), which describes the bus they use to electrically communicate with the other PC components