Product Details: Downwardly compatible with U-DMA 100/66/33 & Standard IDE-devices, f or connecting CD, DVD & Hard Drives etc. 3 X 39 Way connectors for two devices, and the motherboard. 80 core cable used the extra 40 cores are all grounded to reduce crosstalk, ideal for any speed IDE drive 33, 66, 100 and 133 MB/s.
eBay