VIVO Quick Adapter Solutions: This bracket is designed to fit only the following HP Monitor models: 27er (not compatible with M series), 27es, 27ea, 25er, 25es, 24ea, 23er, 23es, 22er, 22es, 22f, 23f, 24f, 24es, 25f, and 27f, 27fw -Patented- Compatibility: Please double check the model of your monitor before ordering!! Designed only for the HP models listed above, this adapter provides mounting solutions for non-VESA monitors, allowing them to fit standard VESA mounts 75x75mm and 100x100mm