Interface. Match connector, form factor and supported storage standard.
Capacity and performance. Compare stated capacity and relevant read or write specifications.
Contents. Check enclosures, adapters and cables separately.
Comparing options
Separate the storage device from any adapter, reader or enclosure it may need. Compare the supported interface and device limits as well as capacity. Check the physical form factor for an internal installation.
Questions about USB Flash Drives
Will a memory card work in any matching slot?+
Check the supported card standard and capacity limits of the device.
Does an internal drive include an external enclosure?+