The 80-conductor cable and the 40-conductor cable.
80 conductor IDE cable; 40 conductor IDE cable
Small Computer System Interface (SCSI) cables are used to connect computers to certain devices such as hard drives, tape drives, printers, CD drives, and scanners.
This is a data ribbon cable is used for computer drives, like hard disk drives, Optical disk drives, and floppy disk drives. They are also referred to as PATA cables. They connect to parallel ports consisting of 20 pins in one row, and 19 in the second, for a total of 39 pins. IDE cables are now considered old, having been largely replaced by SATA cables, which connect to newer drives which run at more RPM. The SATA system communicates more quickly that the PATA system using IDE cables.
IDE cables in computers are used to connect Hard Disk Drives and CD/DVD Drives to the motherboard. - Neeraj Sharma
There are tons of kinds of drives. Floppy Disk Drives, CD-ROM drives, PATA Hard drives, zip drives, flash drives, DVD drives, SATA hard drives.... The list could go on and on and on...
becase they should
parallel ATA
They don't. Jumper cables are used to charge a car battery. Hard drives have no use for such a device.
Typically EIDE cables connect to IDE Hard-drives and optical drives such as CD and DVD Drives. The cable connects between the motherboard of the computer and the hard-drive or optical drive. Normally most motherboards have two idea buses. You can have to drives per cable. So a total of 4 drives.
IDE
You need two cables called IDE cables. Typically these cables have the ability to connect two hard drives or two CD DVD roms. So just find two IDE cables and you can conect what you need to connect.
You should check the exact type of your SATA drives, and what cables they require, on their website: SATA drives come as SATA-1 and SATA-2, and also as E-SATA [external SATA], I believe. The cables may be different, check it out on Wiki or your mfrs site. cheers!