Capacity
How much data the drive can store. Check that specifications describe the exact capacity you intend to buy.
Interface and shape
SATA and NVMe describe interfaces; M.2 is a form factor. Match interface, length, and connector to your system.
Read speed and endurance
Sequential speed is an advertised maximum, not a game-loading result. Endurance describes the rated write workload, usually in TBW.
Compare your options
Use these specifications to narrow your choices, then check the details for the exact model.