Cyber Power Mini Central CPSPV40000ETL Series User Manual page 18

Steps:

Drill 6 holes for screws while use the mounting frame as template.

Fix the mounting frame on the wall as the figures shown below, combine as the screws as the Items Fig
4.1 shows (items D)
User Manual
Dimension of Bracket (units :mm)
Fig 5.3
Fig 5.4
17 / 54 CPS Mini Central series