I have this mount: https://smile.amazon.com/gp/product/B005MX3958/ref=oh_aui_search_detailpage?ie=UTF8&psc=1
As RandomRedditReader stated you have to take off the stand to get to the VESA holes. Also note that if the face of your mount is larger than the square hole on the monitor you will need spacers to go between the mount and the monitor to fill the gap.
Ya my tvs are pretty light. There the newer led 32". I'll probably go with something like
VonHaus Swivel Tilt TV Wall Mount Bracket for 17-37-Inch LED LCD 3D Plasma TVs with Super Strong 66lbs Weight Capacity, Model No 05/027 https://www.amazon.com/dp/B005MX3958/ref=cm_sw_r_other_awd_Aa4Swb45GSVG3
Should suffice just have to get measurements perfect or will be crooked and not line up.