Humanscale 900 Standard Keyboard Tray - Design Your Own

The Humanscale 900 Standard Keyboard Tray is easily customized to fit your specific needs

Effective 11/15/2021, Humanscale requires a signature upon delivery.

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Build the keyboard setup of your dreams. We combined all of the essential features you could want in a keyboard tray and mouse platform with the Humanscale 900 Standard Keyboard Tray, keeping you typing and your hands in the correct, ergonomic position.

Designed to fit on most desks and hold most keyboards, you'll have the unique ability to tilt the tray to that working sweet spot that your hands, wrists, and arms appreciate, leading you to better work. 

Swivel and adjust to your ideal height for the best in ergonomic support, all at your fingertips. The keyboard tray is one of a collection of crucial desk accessories to keep you working comfortably, with hypoallergenic palm supports that take the pressure off your wrists while typing.

Customize your keyboard tray to support your body and work style. The Humanscale 900 Standard Keyboard Tray design ensures that users type and mouse within their Neutral Reach Zone, creating a safe, sustainable, and supremely comfortable work environment.


  • Modular style keyboard
  • Keeps your hands within your Neutral Reach Zone
  • Promotes negative tilt keying
  • Easily customized to fit your specific needs
  • Made of phenolic resin - an ultra-strong, remarkably thin composite that is nontoxic, durable, and easy to clean
  • Supports nearly all standard keyboards and will fit most desks


Mechanisms 9 adjustable arms to choose from
Track lengths 11" - 27" for varying desk depths
Mousing surface 13 clip-on and swivel options
Palm rests Available in foam or gel
Platform dimensions 19" W x 10.625" D
Warranty 15 years

Promotional Item

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This keyboard's split design promotes a more natural and ergonomic typing position.

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Clear up desktop space and keep your computer tower off the floor by mounting it to the underneath of your desktop. This accessory is great for height-adjustable desk users.


FREE UPLIFT Single Monitor Arm

Mount a monitor weighing between 4.5 lbs - 17.5 lbs, and adjust the height, depth or lateral position with easy fingertip adjustment.

UPLIFT Single Monitor Arm


The Humanscale 900 Standard Keyboard Tray is available in black, white, or platinum. Both the keyboard mechanism, keyboard platform and mouse platform will come in the chosen color.


Humanscale Keyboard Mechanisms

Building a Humanscale keyboard system starts with finding the right mechanism for your setup. The mechanism determines the height adjustment and negative tilt for your keyboard tray.

6G mechanism

Humanscale's newest dial-a-tilt mechanism that instantly adjusts the platform's tilt without the need to lock or loosen any knobs or levers and slimmer than the 5G.

Height adjustment 7": 1.75" above track to 5.25" below track
Track length Comes standard with 22" track

5GSM mechanism for limited-depth desks

This mechanism goes 4" farther underneath a desk surface, getting a keyboard tray stored out of the way on a shorter track, perfect for desks with limited depth or small spaces.

Height adjustment 4": 0.5" above track to 3.5" below track
Track length Comes standard with 18" track

Lateral Slider

All Humanscale mechanisms pivot 360 degrees from the point where it is mounted to the track. Some users have a need for additional side-to-side adjustability. The lateral slider provides for eight extra inches of movement from right to left. This is a useful feature for someone at a large workstation that requires them to type facing different angles or monitors.


Track Length

The track mounts to the underside of your work surface. It directs and supports the Humanscale mechanism and keyboard tray as it slides forward and back. Standard length on most mechanisms is 21 5/8 inches. That length ensures that the keyboard tray can be completely stowed under your desk when not in use. Some mechanisms come standard with a shorter or longer track. Consult each description for that information, but all systems can be ordered with any track length.


Mouse Platform

Clip Mouse - Mousing Platform

The clip mouse platform is the only mouse platform that allows the user total adjustment control in all three dimensions - height, depth, forward/back and tilt, allowing it to be adjusted precisely the way you need it. It also easily snaps onto either side of the tray for left or right use, and it's available in two sizes and different height ranges.


The Humanscale 900 Standard Keyboard Tray has several popular mousing platform configurations - 8.5" Clip and High Clip Mouse Platforms:

  • 8.5” Clip Mouse sits (90) 1.16" – 1.96" above the keyboard platform
  • 8.5” High Clip Mouse (90H) sits 1.36" – 2.15" above the keyboard platform - our most popular option!


Note: The high clip has an extra one inch height for additional adjustment and usability and is the most popular accessory we sell.

90H 8.5'' diameter high
90 8.5'' diameter
91H 10'' diameter high
91 10'' diameter
90H90H 8.5'' diameter high - Dual platforms for left and right
91H91H 10'' diameter high - Dual platforms for left and right
Humanscale Clip Mouse Platform

Swivel Mouse - Mousing Platform

The swivel mouse mounts underneath either the left or right front corner of the platform. It swivels out from underneath the keyboard platform easily and tucks out of the way when not in use. This mouse platform is available in right, left and dual configurations. The main difference between the clip mouse and swivel mouse is the adjustability. The swivel platform stays on the same tilt or angle as the keyboard tray; the clip mouse angle can be adjusted independently.

11R 8'' swivel right
11L 8'' swivel left
11D 8'' swivel dual - Dual platforms for left and right
12R 10'' swivel right
12L 10'' swivel left
12D 10'' swivel dual - Dual platforms for left and right
Humanscale Swivel Mouse Platform

M2 Mouse - Mousing Platform

The M2 offers all the advantages of the swivel mouse, but it is slightly larger and offers a uniquely shaped platform. This lets a user bring the mousing surface closer to their body for a lower risk mousing position.

81R M2 right
81L M2 left
81D M2 dual - Dual platforms for left and right
Humanscale M2 Mouse Platform

Mouse Pad

The Humanscale 900 Keyboard Tray can be ordered with a mouse pad to match any of the available mousing platforms.

8.5'' swivel platforms MPGEL8 8.5'' gel mouse pad
10'' swivel platforms MPGEL10 10'' gel mouse pad
90 or 90H clip platforms CMPGEL8 8.5'' gel mouse pad
91 or 91H clip platforms CMPGEL 10'' gel mouse pad

Second Mouse Pad

Add a mouse pad to your optional second mouse platform if desired.


Palm Support

Select from four different palm rest options for your 900 keyboard tray: All are covered with an easy to clean, black synthetic leather and are 19 inches long. The 19 inch slim gel palm rest with synthetic leather cover is only about a quarter of an inch thick and is available in black or silver. Slim palm rests are not compatible with swivel mouse platforms.

When designing your Humanscale 900 Standard Keyboard Tray, if you choose to not add a palm support, there will be two holes located at the installation points on the tray.


Humanscale Palm Rests

This is normal and part of the keyboard tray's design, but if you do not want a palm rest and installation holes in your tray, we suggest ordering another keyboard tray.

If you have any questions or need help choosing a keyboard tray, please don't hesitate to call us!

8 Reviews Hide Reviews Show Reviews

  • 5
    Great keyboard tray

    Posted by Kevin K on Jan 8th 2014

    I added the side to side adjustable platform for the keyboard. This makes it easier to get the keyboard centered on you monitor and still have the pop up mouse tray clear your desk.

    I didn't need the keyboard tray pad, as my keyboard came with a pad.

    If you can't get this adjusted to where you want it, you haven't played with it enough.

  • 5
    great keyboard

    Posted by Holly on Dec 10th 2012

    This is the best keyboard tray I've ever used. Very stable, very easy to use, great price, great value compared to what else is out there.

  • 5

    Posted by ClipartOf on May 27th 2012

    We often work extremely long hours, up to 18 hours a day, sitting at our desks. This keyboard tray helps tremendously with posture and comfort.

  • 5
    Humanscale tray

    Posted by Pamela on Sep 7th 2010

    Excellent product.

  • 4
    Humanscale Keyboard Plateform

    Posted by Fran Hollis-Torres on Apr 27th 2010

    I like the adjustability and movement of the Humanscale Keyboard Platform, but the problem is that it does not adequately fit my split keyboard. I have to constantly adjust my keyboard to work. I do feel more comfortable using it than what I had before which was a standard PC stand keyboard tray. My arms and hands are in a more neutral postion. It would help if it were wider to fit a split keyboard. Thank you

  • 5
    works great!

    Posted by Tom on Jul 7th 2009

    works great!

  • 4
    I like it

    Posted by Simmons on Mar 5th 2009

    This keyboard tray just works. I like the adjustments and the features. I got the high clip mouse with the 5g mechanism.

  • 5
    Humanscale Keyboard Review

    Posted by Ralph on Mar 5th 2009

    I did a lot of research to find the right keyboard tray for my office, and this one really stood out because of that adjustable clip mouse platform and 5g mechanism that adjusts quickly and tells you the degree of tilt also. I have arthritis in my fingers and can't mess with adjustments much, so I called to confirm that this would work for me. Brian walked me through my configuration- the most popular 5G90090HG and really took the time to determine exactly what I was looking for in a setup. (If you aren't sure what you need, I highly suggest calling these guys to get their advice.) Anyways, the lead time was a little long but nothing major- two weeks, and they kept me in the loop during this time too. It arrived, was easy to install (15 mins), and is very well built. It's completely changing the way I work and sit, so I'm really pleased with how everything worked out.

Warranty Policy

Visit Humanscale for the warranty policy for this particular product.

Return Policy

Humanscale products cannot be returned.

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Ships in 3-4 weeks

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