The Delkin Devices Reader-39 is a High-Speed single slot card reader/writer for CompactFlash Types I/II & Microdrive Cards. It supports UDMA enabled cards, and connects to Windows & Macintosh computers via a FireWire 400*/800 interface, providing high speed data transfer at over 45 MB/s**. The Reader-39 is a plug-and-play device so no drivers are needed, and it supports hot swapping so there is no need to reinitialize the reader when changing the card.