On one side of the cable, there are two connectors. Take a minute to familiarize yourself with the Serial cable’s three connectors. Connecting Seagate Drives to Serial Port If you need to extract or reset an unknown password or perform drive recovery on a Seagate hard drive, use a Serial cable to connect the drive to the DiskSense unit.(With EISA systems, make a note of which boards were in which slots to avoid the need to rebuild the system configuration later.) If the system starts to boot without the drives at-tached,re-attachthemonebyoneuntil it no longer boots, to see which is the problem. Hard and floppy drives to see if they are holding the power rails down.