Ergotron Sit Stand Desk Mount System for WorkFit-LX Workstation, 45-405-026

Good, holds position BUT the keyboard arm transmits a monitor wobble making the screen unusable. Contacted Ergotron they didn’t offer any help but suggested it was my fault having cut the stand off my iMac and my desk top was too thin. Imac was tapped and bolted so no difference to any other mount out there. My two desks tried - 50mm thick top then a metal framed one, so that wasn’t the problem. I removed the monitor, the keyboard still transmitted a wobble through to the empty monitor arm... I have managed to buy a XL wall mount pivot fitting on eBay £30 so hopefully we can use this system. The arms on the pole have a lot of play in them, the plastic sleeve that acts as a washer is too thin, I can see this failing in the future. I have spent hours watching YouTube and it appears wobble happens to most connected arm systems, so be warned! I think Ergotron needs to redesign the arm sleeve and admit that wobbling isn’t a user fault.

As you'd hope for such an expensive purchase this monitor arm is really high quality. The arms are made of a combination of light plastic and heavy metals. The monitor arm supports a wide range of monitors and it feels very safe and secure. Make sure you have some room behind your desk to push the arm back if you want the monitor at the back of your desk but this depends on where on the desk you decide to mount the arm (mine is mounted to the left-back side so the arm needs room to bend back behind the desk to have the monitor in the right position for myself). The monitor arm can back and forth, left to right, up and down and even rotate. Moving the screen angle up and down though is very stiff and required a lot of force from myself to do once the monitor was attached (be careful with the monitor when doing this).I do wish the height options were a little better but I'm not going to fault the product for it. It does exactly what it promised.The keyboard arm has most of the features of the monitor arm but it cannot rotate or pitch its angle up and down. This means it has limited use since the mouse would end up sliding off the extendable mouse pad area as soon as you let go of it. The keyboard area provides some sticky areas for you to attach a keyboard more permanently but I did not do this myself since I needed the flexibility to move my keyboard to other areas. You'd be better off sticking some sort of trackball to the tray instead of using a mouse on it, but its great for the keyboard.Bare in mind that the full product with an attached monitor is VERY heavy and needs a strong desk and some clamp space to attach on (unless you want to modify your desk) so make sure it can fit onto your desk before purchasing. Also be sure to check your monitor mount type and ensure that the arm is compatible! My own monitor was not compatible so I made some modifications to make it mountable and its been working great.