Compaq TFT5030 - Manual (Page 13)

Product Features
When the base is removed, four threaded mounting holes are
exposed on the monitor panel to be used for mounting purposes.
These mounting holes are spaced 75 mm apart and are compliant
with the Video Electronics Standards Association (VESA)
standard for mounting flat panel displays.
To mount the monitor on a swing arm or other mounting fixture,
follow the instructions included with the mounting fixture to be
used.
Operating the Monitor
Front Panel Controls
Compaq TFT5030 Flat Panel Monitor User’s Guide 11