IDE Hard Drive Jumper Settings: There is no standard for hard drive jumpers, so you should check with the manufacturer to get their proprietary jumper settings. However, in general, jumpers are placed vertically, not horizontally, and the columns have the following designations: Third column from the right: Master drive Second column from the right: Slave drive Rightmost column: Reserved, or else used for Cable Select (CSEL) Most drives do not need any jumpers in a single-drive system, so you can just leave all jumpers off in that case.