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Humanscale 900 Standard Keyboard Tray - Design Your Own

HUS051 |

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  • Humanscale Keyboard Tray Systems Review08:01

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      Save big on Humanscale at Human Solution!

      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.

      Goldtouch Adjustable Keyboard GTN-0033

      FREE UPLIFT CPU Holder

      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.

      UPLIFT CPU Holder

      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.

      2G mechanism

      Loosen knob to adjust and lock back into place. Unlike the 5G or 6G, this mechanism has no reference for keyboard platform angle.

      Height adjustment 6.25": 1.25" above track to 5" below track
      Track length Comes standard with 22" track

      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

      5G mechanism

      The dial-a-tilt mechanism instantly adjusts the platform's tilt without the need to lock or loosen any knobs or levers. Its solid build quality and simplicity make this mechanism the most popular mechanism Humanscale offers.

      Height adjustment 6.25": 1.25" above track to 5" 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

      5GAD mechanism for above-desk use

      This mechanism's greater-than-average adjustment range is ideal for sit-to-stand workstations, featuring steel construction for stable keying and mousing.

      Height adjustment 13.5": 7.5" above track to 6" below track
      Track length Comes standard with 27" track

      4G mechanism

      This is the older version of the 5G mechanism, featuring dial-a-tilt keyboard angle adjustability.

      Height adjustment 6.25": 1.25" above track to 5" below track
      Track length Comes standard with 22" track

      4GAD mechanism for above-desk use

      This is a version of the 4G with a longer arm for use above a work surface, making it great for sit-to-stand solutions.

      Height adjustment 11.5": 8.5" above track to 3" below track
      Track length Comes standard with 27" track

      KM mechanism

      This mechanism features a pre-set 0 degree tilt and knob-free adjustment.

      Height adjustment 6.25": 1.25" above track to 5" below track
      Track length Comes standard with 22" 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!

      Product Reviews

      Write Review

      Showing reviews 1-5 of 8 | Next

      1. Great keyboard tray 5 Star Review

        Posted by 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.

      2. great keyboard 5 Star Review

        Posted by 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.

      3. Amazing! 5 Star Review

        Posted by 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.

      4. Humanscale tray 5 Star Review

        Posted by on Sep 7th 2010

        Excellent product.

      5. Humanscale Keyboard Plateform 4 Star Review

        Posted by 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

      Showing reviews 1-5 of 8 | Next

      Warranty Information

      This product comes standard with a 15-year warranty.

      Return Information

      • Return windows close 30 days after you receive your item.
      • You are responsible for obtaining a Return Merchandise Authorization, the cost of shipping, and potential restocking fees, if the item has been opened.
      • To start a return, or to view the full returns policy, click here.
      Your Cost $224.00 List Price: $390.00
      Ships Free (US48)
      Ships in 5-7 business days

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      Bulk Deals

      In many cases, we can offer bulk quantity discounts for purchases or smaller orders made over an extended period of time. Bulk deals are based on anticipated volume and the products you've selected. We can also provide you with brochures and swatches to assist in your purchasing decisions.

      If you would like to request a quote, we can be reached via phone (800-531-3746), email (, or live chat from 8am - 7pm Monday - Friday and from 10am - 6pm Saturday.

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