Canon IBM 340MB Microdrive Travel Kit for PowerShot Pro 90 340 MB Microdrive fits in Type II CompactFlash card slots Comes with Type II PCMCIA card for easy image transfer to compatible laptops Can hold hundreds of high-quality JPEGs from 3-megapixel digital cameras Slightly higher power requirements than CompactFlash cards Essentially a miniaturized hard disk, and subject to the same environmental precautions