KnowraSecure DigitalLinked fromLinked fromThe 5 pages that link to Secure Digital, each with the reason it gives.All 5Broader topic 1Narrower topic 1Compared with 3CompactFlashCompared with: SD cards became a smaller, widespread alternative to CompactFlash in consumer cameras.MultiMediaCardCompared with: SD retained compatibility with parts of MMC’s protocol while adding a distinct card design and protections.Universal Flash StorageCompared with: SD cards target removable storage, while UFS is primarily an embedded device interface.