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 90

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2.Remove the keyboard assembly (Section 3.7).

3.Using a Torx T-8 or flat-bladed screwdriver, remove the screw from the front right-hand corner and the left rear corner of the trackball assembly (Figure 3-39).

4.Disconnect the integrated optical trackball assembly from the system board by pulling upward on the trackball assembly.