Draw the screen positions first
Decide whether the screens will meet at the center, whether one will sit directly in front of you, and whether either needs to rotate. Mark those positions on a top-down sketch. The layout should determine the hardware, rather than the hardware determining how you must work.
One dual mount puts the attachment in one area. Two single mounts provide separate attachment locations. That distinction can be useful when an apron, shelf, or cable opening restricts where a base can sit.
Compare the complete assemblies
For a dual mount, confirm the supported size and weight for each screen and the available movement. For two singles, confirm that both attachment points are suitable and that the arms can move without colliding. Twice the number of bases also means twice the attachment footprint.
Do not assume separate arms provide independent height adjustment without checking their mechanisms. Likewise, a dual mount may or may not allow the particular offset you want. The model's drawing and instructions settle the question.
Choose for your pattern of use
If the screens remain in a fixed arrangement, a simpler system may meet the need. If you frequently share a display across the desk or change orientation, prioritize the documented movement and cable routing. We have not tested the movement quality of the products linked below.
Check the total cost of the necessary attachments and adapters at the retailer. Then choose the smallest complete solution that satisfies the plan. A low base price is not a useful saving if the included attachment cannot be used on your desk.
Compare relevant options
These links open our sourced shortlist. Check the complete limitations before choosing.
About this guide
Worked examples are illustrative calculations, not measurements from product testing. Follow the instructions for your exact equipment. Read our research and correction policy.