The following table lists the jumper settings for all the possible hard disk drive configurations.

Jumper

One hard

Two hard disk

Two hard disk

positions

disk drive

drives: master

drives: slave

 

 

 

 

H S P

 

-

-

C/D

X

X

 

DSP

-

X

-

ACT

X

X

X

 

 

 

 

X = jumper installed

- = no jumper installed

To move a jumper from one position to the other, use your fingers, needle-nose pliers, or tweezers to pull it off its pins and gently move it to the other position. Be careful not to drop the jumper or damage the pins as you install it.

If you are going to use only one hard disk drive, the jumpers should be set in positions C/D and ACT. If not, change them to these settings. Then see “Installing a Hard Disk in the Vertical Position” on page B-7 for instructions on installing your first hard disk drive.

If you’ll be using two hard disk drives, you have a total of four jumpers for eight jumper positions. Two jumpers are included with each drive. Install three of the jumpers on the master drive in positions C/D, DSP, and ACT. Install the fourth jumper on the slave drive in position ACT.

If you are installing both of your hard disk drives at one time, you should install the drive in the horizontal drive bay first. See “Installing or Removing a Disk Drive in the Horizontal Position” on page B-27 for instructions.

B - 6 installing and Removing Disk Drives