Compaq 400 486 DX2/40 MHZ 250 MB 4 MB 9.5, 400C 486 DX2/40 MHZ 250 MB 4 MB 9.5, 400CX 486 DX2/40 MHZ 250 MB 4 MB 8.4, 410 486 DX2/50 MHZ 250 MB 4 MB 9.5, 410C 486 DX2/50 MHZ 250 MB 4 MB 9.5, 410C 486 DX2/50 MHZ 350 MB 4 MB 9.5, 410CX 486 DX2/50 MHZ 350 MB 4 MB 8.4, 420C 486 DX4/75 MHZ 350 MB 4 MB 10.4, 420C 486 DX4/75 MHZ 420 MB 8 MB 10.4, 420CX 486 DX4/75 MHZ 420 MB 8 MB 10.4, 430C 486 DX4/100 MHZ 420 MB 8 MB 10.4, 430C 486 DX4/100 MHZ 720 MB 8 MB 10.4, 430CX 486 DX4/100 MHZ 720 MB 8 MB 10.4 Chapter 3.12 Integrated Mechanical Trackball Assembly (Models 400 and 410)

4. To remove the processor upgrade, reverse the previous steps.

Chapter 3.12 Integrated Mechanical Trackball Assembly (Models 400 and 410)

IMPORTANT: The mechanical trackball assembly is not interchangeable with the optical trackball assembly in Models 420 and 430.

To remove the integrated mechanical trackball assembly, follow these steps:

1.Disconnect all power from the computer and remove the AC Adapter and battery pack (Section 3.2).

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The computer becomes top heavy when the keyboard assembly is removed and the display is opened. To prevent damage to the display and the computer, ensure that the display assembly is opened at a 90-degree angle.

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