M.2 SSD is a small form factor SSD for thin devices, supporting PCIe and SATA. SATA SSD is a versatile interface SSD for desktops and laptops, available in 2.5-inch enclosures. M.2 offers higher performance but smaller capacity, SATA provides 3-4 times bandwidth
Hard drives come in SATA (new) and PATA (older) designs. Laptop drives are typically 2.5 inches, desktops 3.5 inches. 2.5-inch drives vary in height from 9.5 to 12.5 mm
Modern laptops and Macs don't have space for second hard drives. SATA drives from same manufacturer recommended for compatibility. Computer must be unplugged and fans stopped before installation. Ground yourself before opening case and installing drive. Drive should fit under primary drive with cable side facing you
Check computer compatibility before purchasing new drive. Ground yourself to prevent electrostatic shock. Ensure computer has expansion slot or replaceable drive
SATA is a computer bus interface for mass storage devices introduced in 2000. Replaced PATA interface with seven conductors and flexible port design. Provides faster data transfer rates through higher signaling rates
SSD compatibility depends on interface type and hard drive bay size. Compatibility can be checked using manufacturer software or manual inspection. PC manual or model can reveal current drive information. Device Manager shows installed drive model. PC disassembly reveals port and drive bay specifications