KnowraSD cardLinked fromLinked fromThe 4 pages that link to SD card, each with the reason it gives.All 4Broader topic 1Related 1Compared with 2USB flash driveCompared with: It uses similar memory but depends on a card slot or separate reader.ExpressCardCompared with: SD cards became a simpler built-in option for removable storage, unlike ExpressCard's general expansion role.