This adapter enable CompactFlash (CF) storage card to use TRUE IDE mode. Directly replace HITACHI 1.8" PC IDE hard drive. Also compatible with 2.5" IDE port. Specifications: Support type I and type II CF storage cards.. supported DMA. DO NOT support hot-swapping. Jumper for setting Master/Slave modes. Plugs directly into IDE port for HITACHI 1.8 inch HDD. Also compatible with IDE port for 2.5" harddisk drive. Dimensions: 60 x 70 x 7 (mm)