BenQ BL2411PT User Manual page 10

Extend the stand to the maximum extended position.
And rotate the monitor 90 degrees counterclockwise as
illustrated.
You might want to adjust the monitor stand height. See
Adjusting the monitor height on page 14
information.
You should position the monitor and angle the screen to
minimize unwanted reflections from other light sources.
2. Connect the PC video cable
Do not use both DVI-D cable and D-Sub cable on the same
PC. The only case in which both cables can be used is if they
are connected to two different PCs with appropriate video
systems.
To Connect the D-Sub Cable
Connect the plug of the D-Sub cable (at the end
without the ferrite filter) to the monitor video socket.
Connect the other end of the cable (at the end with the
ferrite filter) to the computer video socket.
Tighten all finger screws to prevent the plugs from
accidently falling out during use.
10 How to assemble your monitor hardware
for more
Either