IDC 40P cable 1)cable: UL2651 40P/28AWG/Pitch=1.27mm/Gray/PVC 2)Socket: 2*20Pin/Pitch=2.54mm/Black/PBT 3)Hipot: 500V DC/IR.: 5Mohm Min/COND.: 5ohm 4)TheRateupto33Mb/s 5)used for IDE HDD or CD-ROM