Mouse and keyboard tray need to be adjustable. No, that is not so. That doesn't make it ergonomic for me. I keep poking around in the record behind the shelf. Measuring between the top shelf and the keyboard shelf compresses the shoulders. I actually have to use the keyboard and mouse drawer on my desk it's on and my hands and knuckles keep bumping into the bottom shelf. I am very disappointed that the keyboard tray is not an adjustable lockable tray.
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