It is an adaptor for connecting a compact flash memory card to a 3.5" IDE host interface. This is a extended double sided version which can accommodate two CF cards simultaneously
One end is 3.5" 40-pin IDE connector and the other end is standard 50-pin CF socket
Double sided Compact flash socket
+5V floppy disk drive power connector
Support DMA, fully compatible with Compact Flash Type I, Type II, and Micro-drive
Plug card into IDE socket directly or connect to motherboard by a cable
Master or slave mode selection
Bootable on any operating systems
No driver/software required
Easy to install