A monitor mount for desk helps raise your screen to a comfortable eye level, free up desk space, and keep cables neatly organised. But one thing matters most: installation quality directly affects the arm’s stability, smooth adjustment, and even the safety of your desktop surface.
Proper monitor mounting impacts not only day-to-day comfort, but also the lifespan of your equipment. A securely installed desk monitor arm reduces stress on the mechanism and helps the PC screen stay stable during daily use.
With proper installation, you can work comfortably with one or more monitors at home or in the office - and quickly adapt screen position for different tasks.
Before You Start
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Read the included manual
It explains assembly steps, maximum load capacity, and model-specific features. -
Watch ONKRON video guides
A visual walkthrough helps prevent common mistakes
If you’re still choosing the right model, we recommend reading: “How to Choose the Right Desk Monitor Mount”
Preparation Before Installation
1) Check Compatibility
Pay attention to:
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VESA mounting standard (most commonly 75x75 or 100x100)
Exact compatibility is listed in your monitor specs and the arm’s manual.
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Monitor weight and screen size
Must be within the arm’s rated load range. -
Centre of gravity
On ultra-wide and curved monitors, it shifts forward.
Important: Don’t exceed the rated load, and avoid keeping the monitor desk arm fully extended unless necessary.
2) Check Your Desk
What to consider:
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Minimum desktop thickness is typically 10-15 mm (confirm in the manual).
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Desktop material must handle the load without bending or deforming.
Installing a PC screen mount on glass or hollow-core/honeycomb desktops (thin plywood + cardboard) is usually not recommended. In this case, a monitor stand is a better solution - such as PT2.
Also check:
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Whether there’s a frame, cable tray, or power strip underneath - your monitor arm base must sit flat.
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Whether there’s enough room for a С-clamp.
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Whether there’s a gap between the desk and wall (usually at least 15-20 mm).
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Extra space behind the desk is also needed for free arm movement and cable routing.
Why desk specs matter
It’s not only the monitor’s weight that matters - it’s how the load is distributed through the screen mount base. A desktop that’s too thin or soft may develop micro-deformations. This can reduce stability and cause screen wobble.
3) Prepare Tools
ONKRON monitor desk mounts typically include hex keys and all required hardware.
You may also need:
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Phillips screwdriver
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Measuring tape or pencil
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For grommet mounting: a drill and the correct drill bit diameter (as specified in the manual)
4) Verify Package Contents
Lay out all parts before assembly - it saves time and helps prevent mixing up screws and spacers.
Choose a Desk Mounting Method
1) Clamp Mount (C-Clamp)
The most common option: the base clamps onto the edge of the desktop.
Pros:
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No drilling required
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Easy to reposition the monitor holder
Cons:
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Requires a straight, solid desk edge
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Needs enough clearance from the wall
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Don’t overtighten - it can damage the tabletop
2) Grommet Mount (Through a Desk Hole)
The base is secured with a bolt through a hole (for example, a cable pass-through).
Pros:
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Convenient when the desk is placed flush against a wall
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More secure base fixation
Cons:
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Requires a suitable hole diameter
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Harder to change the mount position later
Step-by-Step: Clamp Installation
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Mark the installation spot
Aim for the center of your working area and your usual keyboard/mouse position. -
Protect the desktop
Use the included pads. Make sure metal parts do not touch the desk surface directly. -
Secure the base
Tighten the clamp evenly without tilting.
The goal is a firm hold without bending the desktop. -
Assemble the desktop monitor mount
Don’t fully tighten every joint until final positioning is complete.
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Attach the monitor to the VESA plate
Use the hardware provided or the screws recommended by the monitor manufacturer. -
Do initial adjustments and cable management
Set height, tilt, swivel, and portrait/landscape mode. Route cables through channels/clips so they don’t pull tight at the arm’s extreme positions.
Through-Hole (Grommet) Installation
Before you begin, make sure there are no structural parts under the desktop that could interfere.
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Choose the mounting point
The base must sit flat and stable. -
Prepare the hole
Drill only the diameter specified in the manual, and confirm it’s safe for your desktop. -
Secure the base
Use the included washers and clamping plate. Tighten until secure - without bending the desktop.
Then follow the standard steps to attach the display to the VESA plate and adjust the desk mount for monitor.
How to Adjust Your Monitor After Installation
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The top edge of the screen should be roughly at eye level (so you don’t tilt your head up or down).
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Viewing distance: about an arm’s length.
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Avoid leaving the arm fully extended unless necessary.
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For gas spring monitor arms, adjust spring tension according to the manual.
Common Mistakes and Quick Fixes
The monitor wobbles or vibrates.
Check how firmly the base is secured and reduce arm extension. If your desktop is thin, reinforce it with a solid backing plate (plywood or similar) or use a through-bolt mounting method.
The monitor “springs” up or drops down.
Adjust the tension. If that doesn’t help, the monitor may be lighter or heavier than the arm’s supported range.
Scratches appear on the desktop.
Always use protective pads and don’t overtighten the clamp.
VESA screws don’t fit.
Don’t force them. Use the correct hardware and spacers.
Not enough room near the wall for the clamp.
Move the mounting position or choose through-hole mounting.
Maintenance After Installation
Every few months, check fastener tightness and the condition of key joints. Regular inspection helps maintain stability and overall safety.
Final Thoughts
Installing a computer monitor desk mount is a task even a first-time user can handle by following the instructions. A desk mounted monitor arm saves space, improves cable organisation, and makes your setup cleaner, more ergonomic, and more efficient.
You can choose the right ONKRON monitor arm in the Desktop Mounts catalogue
