Product Description STCI4001 40P MALE SINGLE SLOT CF To IDE(IDE-CF) Adapter is an adapter for connecting a compact flash memory card to a 3.5'' host interface, aiming at educational sectors, IT development, and the embedded technology enthusiast to enable the use of a compact flash card as an IDE hard drive. Specification & Features > Support Single CF in this adapter > Very helpful for embedded system designers and engineers > No driver required > Master / Slave mode ion > Male , 40-pin IDE connector with 4-pin power connector on-board > You can boot Dos/Windows/Linux with CF, same as IDE hard drives, but much faster Master/Slave jumper ,with DMA MODE,support CFI/CFII cards > Power input: +5V, floppy disk Drive power connector