Compatibility - Holds Three Screens up to 27" and 22 lbs each with VESA Mount (75 X 75 & 100 X 100 mounting holes). Mounts to desk (up to 4" thick) with heavy duty C-clamp or optional grommet mount Motion - +15?? to -15?? tilt, +90?? to -90?? swivel, 360?? rotation, and height adjustment for ideal viewing angles Cable Management - System integrated to keep potentially messy cords clean and organized Adjustability - Every joint is able to be tightened, so you can adjust exactly how fluid/stationary you want everything, simply remove the cap on the joint and tighten the bolt underneath We've Got You Covered - Sturdy steel design is backed with a 3 Year Manufacturer Warranty and friendly tech support to help with any questions or concerns.