IBM RT PC Options Installation page 85

10. Set the jumpers on the drive adapter according to which drive
you are installing:
• If you are using R40 fixed-disk drives, refer to "IBM Personal
Computer AT Fixed-Disk and Diskette Drive Adapter" on page
2-53.
Warning: The jumpers on the IBM Personal Computer
AT Fixed-Disk and Diskette Drive Adapter must be reset
if the adapter was previously installed in adapter slot 1.
• If you are using R70 fixed-disk drives, refer to "IBM RT PC
ESDI Magnetic Media Adapter" on page 2-54.
Warning: The jumpers on the IBM RT PC ESDI
Magnetic Media Adapter must be reset if the adapter was
previously installed in adapter slot 1.
• If you are using E or 310 megabyte fixed-disk drives, first
remove the IBM RT PC Extended ESDI Magnetic Media
Adapter as shown in Step 10, page 2-30. If you wish to
change adapter slot positions, refer to the illustration that
accompanies Step 13 on page 2-32. Note which version
adapter you have, and set Jumper J6 as shown.
Warning: Jumper J6 on the IBM RT PC Extended ESDI
Magnetic Media Adapter must be set according to which
adapter slot is used. Refer to the illustration on page 2-32
to set Jumper J6.
Section 2. Removing and Installing Drives in IBM 6150 2-41