IBM RT PC 10 Hardware Maintenance And Service page 202

3. Connect the signal cable.
4. Connect the data cable.
5. Connect the power cable.
6. Connect the ground wire.
7. Slide the fixed-disk drive into the system unit until the latch wire clicks.
8. Slide the diskette drive into the system unit until the latch wire clicks.
9. Do the "Top Cover Replacement" on page 4-13.
Data
Power
Connector
Removal and Replacement
4-31