I used it once, but I'm selling it to declutter. No price reduction. This adapter only fits the following Dell monitor models: S2216M/HV/H S2316M/H and S2317HJ S2416H S2717Q S2817Q SE2216H (Does NOT fit SE2219 monitors) SE2416H/HSC1/HX and SE2417HG (Does NOT fit SE2419 monitors) SE2716H and SE2717H/HR/HX (Does NOT fit SE2719 monitors) Note: This adapter does NOT fit other models or brands, so please make sure your monitor is listed before ordering. Easy Installation: You can install the HumanCentric Dell monitor bracket in under 2 minutes with just a screwdriver. Simply remove the existing base and snap our base into place, then connect directly to your VESA mount. We have extensively tested the mount to ensure it fits your monitor correctly. Use this VESA adapter to mount specific Dell monitors to VESA arms, VESA stands, and VESA desk mounts. The mount adapter allows you to mount your monitor to the standard monitor mount sizes of 75x75 mm and 100x100 mm, found on most workstation VESA mounts.