Specifications

Chapter 8.4 Compaq Portable 286 System Board Jumper Settings
Table 8.4 lists the various combinations of jumper settings for the COMPAQ
PORTABLE 286 board. For the location of the COMPAQ PORTABLE 286 system board
jumpers, see Figure 8.4-1.
If the speed select jumper (ES) is changed to the 6 MHz speed (pin 2 to
pin 3), the system will operate only at a 6 MHz clock speed and will not
respond to speed change requests from the keyboard when the CTRL + ALT + \
keys are pressed.