Humanscale 500 Big & 550 Big Compact Keyboard Tray - Design Your Own

The Humanscale 500 Big Keyboard Tray and Humanscale 550 Big Compact designs ensure that users type and mouse within their neutral reach zone, creating a safe, comfortable and sustainable work environment. The neutral zone in a standard office workspace is defined as the area where a user sits and works at a desk and can easily reach and interact with surrounding computer accessories, including a keyboard and mouse. Unlike older generation keyboard and mouse solutions, Humanscale keyboard trays are designed to ensure that nearly all users are able to work consistently within their Neutral Reach Zone, and thus maintain a low-risk posture. These boards keep everything on one worksurface rather than use a mousing platform; this keeps a mouse on the same tilt as the keyboard in use. If you prefer to set the mousing surface angle separately, any of the other Humanscale keyboard trays aside from the 400 keyboard tray platform offer this option.

Video Review - Humanscale Keyboard Tray Systems

Check out our video review of the Humanscale Keyboard Tray Systems below.

Model - Humanscale 500 Keyboard Tray

Select from the standard 27 inch wide 500 board or the more compact 25 inch 550 board.

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Mechanism - Humanscale 500 Keyboard Tray

The mechanism is the arm that controls the in-and-out movement, the height range and the tilt angle of your keyboard platform. All of the Humanscale keyboard tray mechanisms offer independent height and tilt adjustment with varying levels of height adjustment and standard track lengths. The 6G and 5G mechanisms are the most popular and suit a variety of workstation needs; they are strong and durable, easy to use and offer a good range of motion. The 5GSM offers the same functionality as the first two but for limited depth desks. The rest of the mechanisms offer special features, like the AD for above desk applications or the DS for users who need two point of adjustment for facing different directions.

6G	Humanscale 6G Keyboard Tray 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 New design is much slimmer than the 5g 6G Specifications Height adjustment 6": 1.25" above track to 5" below track Track length Comes standard with 22" track
5G	Humanscale 5G Keyboard Tray Mechanism Dial-a-tilt mechanism instantly adjusts the platform's tilt without the need to lock or loosen any knobs or levers Solid build quality and simplicity make this mechanism the most popular accessory they offer 5G Specifications Height adjustment 6": 1.25" above track to 5" below track Track length Comes standard with 22" track
5GSM	Humanscale 5GSM Keyboard Tray Mechanism for Limited Depth Desks For desks with limited depths or small spaces Goes 4" farther underneath a desk surface, getting a keyboard tray stored out of the way on a shorter track 5GSM Specifications Height adjustment 4": 0.5" above track to 3.5" below track Track length Comes standard with 18" track
5GAD	Humanscale 5GAD Keyboard Tray Mechanism Greater-than-average adjustment range is ideal for sit-to-stand workstations Steel construction for stable keying and mousing 5GAD Specifications Height adjustment 13.5": 7.5" above track to 6" below track Track length Comes standard with 27" track
4G	Humanscale 4G Keyboard Tray Mechanism Older version of the 5G mechanism Dial-a-tilt feature offers keyboard angle adjustability 4G Specifications Height adjustment 6.25": 1.25" above track to 5" below track Track length Comes standard with 22" track

4GAD	Humanscale 4GAD Keyboard Tray Mechanism for Above Desk Use 4G with a longer arm for use above a work surface Great for sit to stand solutions 4GAD Specifications Height adjustment 11.5": 8.5" above track to 3" below track Track length Comes standard with 27" track
2G	Humanscale 2G Keyboard Tray Mechanism Loosen knob to adjust and lock back into place No reference for keyboard platform angle like the 5G or 6G 2G Specifications Height adjustment 6.25": 1.25" above track to 5" below track Track length Comes standard with 22" track
KM	Humanscale KM Keyboard Tray Mechanism Pre-set 0° tilt Knob-free adjustment KM Specifications Height adjustment 6.25": 1.25" above track to 5" below track Track length Comes standard with 22" track

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Lateral Slider - Humanscale 500 Keyboard Tray

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.

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Track Length - Humanscale 500 Keyboard Tray

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.

Track Lengths

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Palm Rest - Humanscale 500 Keyboard Tray

Select one of the foam or gel palm rest options for the 500 (27" wide)or 550 keyboard trays (25" wide). For the 500 Big Board, you can select 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 want a palm rest in front of their mouse or keypad (pictured in main image above). All are covered with an easy to clean, black synthetic leather except for the 27" gel with a Lycra knit cover.

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Free Ergonomic Mouse

This Goldtouch Ambidextrous Mouse is a great universal mouse that's designed to fit both right-handed and left-handed users and relieve tension and strain. Purchase this item and receive a Goldtouch Ergonomic Mouse, absolutely free!

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