Loading...

Humanscale 400 Diagonal Big Keyboard Tray - Design Your Own

The Humanscale 400 is easily configured to meet specific needs with the multiple options available and are the highest quality on the market
Shop standing desks and ergonomic accessories by UPLIFT Desk

When your keyboard setup is ample, try the tray that's big enough to handle housing your keys and mouse platforms on a single surface with the Humanscale 400 Diagonal Big Keyboard Tray.

The 400 board stores everything on your work surface instead of needing a separate a mousing platform - allowing you to keep your mouse at the same tilt as your keyboard.

And not only is the tray spacious, it fits the angled edges of a diagonal corner, letting you install an ergonomic keyboard tray on trickier desk setups.

The Humanscale 400 is available with a Design Your Own option for more customized typing, your way.

Save big on Humanscale at Human Solution!
 

Features

  • Easily configured to meet your specific needs 
  • 400 board offers the widest single surface for a keyboard tray
  • Platform is made of phenolic - an ultra-strong, remarkably thin (1/4") composite that's non-toxic, durable, and easy to clean
  • Design supports multiple keyboards and mice combos and will fit most desks, including corner desks
  • No need for a separate mousing platform

Specifications

Mechanisms 9 adjustable arms available
Track lengths 11" - 27" for varying desk depths
Palm rests Available in foam or gel
400 platform dimensions 27.5" W x 11.5" D
Warranty 15 years
 

Color

The Humanscale 400 Diagonal Big Keyboard Tray is only available in Black.

 

Humanscale Keyboard Mechanisms

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

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

AD mechanism

This mechanism is the 2G mechanism, but with a longer arm for use above a work surface. It works well for sit-to-stand solutions.

Height adjustment 10'': 5'' above track to 5'' below track
Track length Comes standard with 25'' track
Humanscale AD Mechanism

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.

 

Palm Support

Select one of the foam or gel palm rest options for the 400 Diagonal Big keyboard platform. Choose a solid 27'' palm rest or a split palm rest with one 20'' section and one 7'' long section; this feature comes in handy if a user doesn't always want a palm rest in front of their mouse or keypad (pictured in main image above). Both types of palm supports are covered with an easy to clean, black synthetic leather.


Slim 19'' gel palm rests are also available for users with thin keyboards such as those made by Apple. The slim gel palm rests are available in silver or black, but will not sit flush against the corner of the keyboard tray like the 27'' or 20'' palm rests. The slim 19'' palm rests will sit roughly 5/8'' away from the closest corner when installed.

 

Humanscale Palm Rests

When designing your Humanscale 400 Diagonal Big Keyboard Tray, if you choose to not add a palm support, there will be two holes located at the installation points on the tray.


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!

 

Mouse Platform

A separate mouse platform is not available as this keyboard tray is large enough to support mousing on the main platform.

 

Mouse Pad

A mouse pad for the separate mouse platform is not available as this keyboard tray is large enough to support mousing on the main platform.

 

Second Mouse Pad

A mouse pad for the separate mouse platform is not available as this keyboard tray is large enough to support mousing on the main platform.

 

Promotional Item

FREE Goldtouch Adjustable Keyboard GTN-0033

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

 

2 Reviews Hide Reviews Show Reviews

  • 3
    Solid but misleading...

    Posted by Unknown on Aug 6th 2017

    I bought his product because it would be installed in a corner of a L-shaped desk and the length of the track... I didn't want a palm rest and almost returned the product because of of holes in the tray where the palm rest is installed. The picture shown should be displayed with the choices that are made so buyer understands what it will look like... I wrapped vinyl paper over the holes, hopefully I'll not regret returning this.

  • 4
    Good product...

    Posted by Victor S. West Orange NJ on Jun 17th 2013

    It works well, easy to adjust, but it responds to my typing more, than i expected. Also for the price I would expect more elegant appearance than it actually is - kinda constructivistic.

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 Price
$254.00 List Price: $390.00* The list price is the same as the MSRP (Manufacturer's Suggested Retail Price). It may not necessarily be the price at which the product is sold.
Ships Free (US 48)
Currently shipping in 3-4 weeks

Learn more about each option

Select an option...

  • Promotional item
  • Color
  • Mechanism
  • Lateral Slider
  • Mouse Platform
  • Palm Support
  • Track Length
  • Mouse Pad
  • Second Mouse Pad
  • Order Review

*Cycle through all the options by clicking the "Next" and "Back" buttons below

Click the next button to move to the next option

Select to see the list of options, and click each option to explore

JUMP TO AN OPTION

Build Progress

( 0% completed)