Flash memory cards provide electrically erasable, programmable, read-only memory (EEPROM) that can be erased and reprogrammed in blocks instead of one byte at a time.
PCMCIA cards and accessories follow standards developed by the Personal Computer Memory Card International Association (PCMCIA), an international standards body and trade organization. PCMCIA cards, or PC cards as they are commonly known, were designed originally for adding memory to portable computers, but are now used in a variety of devices.
PCMCIA memory and storage cards (also known as PC cards) are devices used to add memory (RAM, SRAM, Flash, etc.) and/or storage capacity (hard disks, CD-ROM, etc.) to computers.
USB products is a general search form that covers a wide range of devices that use the universal serial bus (USB) standard. USB products include host controllers, adapters, hard drives, CD-ROM drives, hubs, modems, faxes, and routers.