Most monitors manufactured today conform to the Video Electronics Standards Association (VESA) Flat Panel Monitor Physical Mounting Interface (FPMPMI) Standard. All Ergotron ARMS products are designed to fit this standard. However, if you own a monitor that does not use this standard interface, a custom bracket may be available for your monitor.If you have a 100mm monitor that you would like attached to an Ergotron ARMS product with a 75mm interface, a 75mm to 100mm Conversion Plate Kit is available.