IBM 2193 - Manual (Page 119)

Adding and removing adapter cards and drives 8-9
Guidelines for connecting diskette interface signal cables
Your system board has one connector for attaching diskette interface signal cables,
but you can install two diskette interface drives to this connector if you have the
proper cables.
If you are installing a second diskette drive or a tape drive, follow these guidelines:
1. Replace the diskette-drive signal cable attached to the diskette drive
connector (labelled J14 on the system board, if the machine type of your
system is 2193; labelled Floppy 1 on the system board, if the machine type of
your system is 2194 or 6345) with a diskette-drive signal cable that has two
connectors. Remember to reconnect the factory-installed drive to the new
cable.
2. Do not change any settings on the factory-installed diskette drive.
3. Install the new drive.
4. After completing the installation of the drive, start the Setup utility and verify
that the drive parameter settings in the Devices and I/O Ports menu are
correct. See “Chapter 6. BIOS Setup configuration” for details.
When you have finished installing the diskette drive, enter Setup to make sure that
the drive parameter setting is correct. See “Loading the default settings” on page
6-7.