Delkin Devices ExpressCard 54 CompactFlash Adapter (DDEXP54-CF-2) UDMA capabilities, but will also work with non-UDMA enabled devices Compatible with notebooks and PCs equipped with Universal 54 mm Slot Proficient transfer speeds up to 40 MB/s It can be used with Windows XP or Mac 10.4x and higher. High Speed Transfer, Over 30 MB/s ,UDMA Enabled, Works in 54 mm ExpressCard Slots, Operates through PCI-E Interface, drivers required