The Freecom USB card is a slim, 2-mm flash memory device in credit-card format. Designed especially for business people, the flat device fits into any wallet. The USB plug is integrated into the card and folds out when the unit is operated. The USB card is available with memory storage capacities ranging from 256 MB to 4 GB and is compatible with Windows and Mac OS X. Data security is guaranteed by password protection and the encryption software that comes with the card.