Compaq 7020 - Manual (Page 6)

Installation
Connecting the Display to the Swivel Base
Before connecting the display to the swivel base support column,
please refer to Fig.1-2.
The rear of this display has four integrated 4 mm, 0.7 pitch,
threaded holes, as well as four 5 mm access holes in the plastic
covering as illustrated in Figure 1-3. These specifications meet
the VESA Flat Panel Monitor Physical Mounting Interface
Standard (paragraphs 2.1 and 2.1.3, version 1, dated 13
November 1997).
Figure 1-3
1-4 Compaq 7020 Flat Panel Monitor User’s Guide