HumanCentric VESA Mount Adapter Compatible with iMac 24" (Aluminum), iMac 27" (2009, 2010, 2011), LED Cinema Display, Thunderbolt Displays, Replaces Bracket MD179ZM/A, Does Not Work with 2021 iMacs

A few years ago I bought some USB-powered Video meeting LED lights from HumanCentric. The controller failed and HumanCentric quickly acknowledged the known issue and quickly mailed me an updated controller. I still use the lights to this day!For this reason I did not hesitate to buy another product from them. Their mount is well-built and comes with everything you need to arm-mount your old Apple Display, even the card tool to remove your factory stand! Took me less than 10 minutes! I am very happy and would not hesitate to buy any product they offered expecting it to be well designed, well made, well packaged, clear instructions, and people of integrity standing behind it. Thank you HumanCentric. Perfect!

I have a mid-2011 Thunderbolt display and wanted to mount on a monitor arm. This VESA adapter worked perfectly, is made of machined aluminum and came with all the right screws and tools to get the job done. They even included a special bent piece of plastic to properly unlock the stand so you can reveal the attachment screws to remove the stand and attach the mount.Read their instructions because for my mounting setup, there was about a 3/8" gap between the mounting block and the plate, so it seemed like things didn't fit properly but this is by design. Just don't overtighten the two bigger mounting screws, otherwise you'll bend the aluminum bracket. The gap didn't seem to be an issue and the monitor is securely mounted now.

UPDATE: HumanCentric contacted me, and gave me a full refund. Extremely good customer service, and I have changed this review from 3 to 5 stars as a consequence. I just hope that they start supplying longer bolts to future customers.ORIGINAL REVIEW:As other have written, the main bolts that connect the bracket to the monitor mount are too short. On my monitor, they weren't even long enough for the threads to catch.The supplied bolts are m6-100, 15 mm in length. I ended up buying and using m6-100 25mm length bolts, which worked very well. 20mm length might work on monitors with greater curvature on the back than mine.Once you get adequate bolts, this mount is quite solid and as easy to install as anything can be on Apple gear. Definitely a good value for the cost. It's crazy to me that the manufacturer does not supply decent length bolts (or bolts of multiple lengths), as mine problem seems to be quite common. Were it not for that issue, this would be a 5 star review.

Purchased this to mount my Apple Thunderbolt Display to a HEMUDU Single Tall Desk Monitor Arm Mount Stand on my standing desk. Held the display well. No concern about stability. Easy enough to add/remove to the display.

The mount works as advertised, and seems very sturdy and solidly built.However, the instructions failed me on one obvious (perhaps), but very important step. After you remove the stand from your monitor/computer, the mounting bracket should be exposed. It isn't clear from the instructions that this should be the case, and for me the mounting bracket retreated back into the monitor after I removed the stand. So after rereading the instructions, looking around inside the monitor with a flashlight, and otherwise thinking I had missed something very obvious, I came back to Amazon to check what I bought, thinking that I bought the wrong thing. I then read more reviews for the mount and discovered that what happened in my case is pretty common.If this happens to you, you're going to have to get creative to expose the mount. What I ended up doing was taking a length of guitar string and threading it through the screw holes on the mounting bracket, then pulling (while simultaneously pushing in the tab with the provided plastic card). I eventually got it to lock in place so I could install the flange, but it was a HUGE pain.Had the instructions made more explicit the need to make sure the mounting bracket remains locked and exposed before you remove the stand, it would've saved me a lot of time and frustration. And given that this is pretty common, it would also be helpful if they included guidance on what to do if your mounting bracket doesn't stay exposed.

When I first tried to install the mount, I ran into the problem that many did - the mount was so far from the screw holes that I couldn’t attach it and thought I needed longer screws. I got a bit creative and decided to put the mount BACKWARDS and screw in the two large bolts, then attached my Humanscale monitor arm bracket inside the mount, and IT WORKS! I attached the monitor to my desk!! Hope this approach helps you!

Bought two of these and one of the packages was obviously a previously opened one (mfg packaging was torn in multiple spots and taped). The one that hasn’t been opened fit perfectly as expected while the one that someone didn’t want and I got stuck with didn’t. One of the screws was stripped and in order to make it work I had to remove part of the plastic that prevents damaging. I added some double stick tape instead as I don’t have time to deal with a return. My expectation when ordering a NEW item is exactly that, NEW item. I don’t expect to receive someone else’s return that has been stripped to the point it’s partially functional. Time will tell if using this mount is going to damage my monitor due to not having the plastic spacers but I needed to get back to coding.

This piece is solid and well-crafted. After finding a video on how to remove the stand, it was very easy to install. The connection is very stable and secure.