* USB storage devices are rapidly replacing floppy discs and Zip disks as the first choice for portable storage. Many of these are key ring size and can store up to 1Gb of data. But now Sony is launching a new version of its USB Micro Vault Pro, which holds up to 5Gb of data. The Micro Vault Pro is the size of a business card and has a neat swivel USB connector that plugs straight into a computer's USB port. No price details were available as we went to press.