Compaq PORTABLE 386 Maintenance And Service Manual page 141

5. Carefully slide the fixed disk drive out of the fixed disk drive expansion
unit housing.
NOTE: A terminating resistor must be installed on a 300 megabyte fixed disk
drive if:
o The fixed disk drive is in a 300 Megabyte Fixed Disk Drive Expansion Unit.
o The fixed disk drive is the secondary drive in a 600 Megabyte Fixed Disk
Drive Expansion Unit.
To remove the terminating resistor, complete the following steps:
1. Locate and remove the terminating resistor from the fixed disk drive using
needlenosed pliers (Figure 8-110).