SanDisk Corp. unveiled a Universal Serial Bus flash drive that automatically copies files to an online backup service when plugged into any PC with an Internet connection. The new Cruzer Titanium Plus flash drive is priced at $59.99 with 4GB of memory. It will be available in March, replacing the older Cruzer Titanium line. The online backup capability is priced at $29.99 per year, after the first six months of the service which are offered without charge. The files will be copied to Tel Aviv-based BeInSync Ltd.'s online backup service under an arrangement with SanDisk. The backup service will store up to 4GB for each product, effectively mirroring the capacity of the USB drive. Any new or changed files copied to the USB flash drive while a PC is offline will be backed up during the next connection. Any files deleted from the flash memory product will be kept online for approximately 30 days. The backup service currently supports PCs running Microsoft Windows 2000 (Service Pack 4), Windows XP and Windows Vista. SanDisk has no plans to provide online backup support to Macintosh- and Linux-based systems.