 The USB FlashCard uses a modified USB Type A plug which keeps the total thickness of the card to under 4.5 mm.Because of its small size and USB compatibility, a USB FlashCard could, for example, be accessed by either a digital camera or a modern personal computer without the need for a card reader.Lexar has published the specifications for its USB FlashCard form factor on its website in an open and royalty-free format, in the hopes that other memory card and portable device manufacturers will adopt it.