Wireless Ergonomic Mini Trackball Keyboard

The Wireless Ergonomic Mini Trackball Keyboard from Adesso has a tenkeyless layout and features a fixed split design with integrated cursor control and clicking. The compact width of just 13.8" and incorporated cursor control reduce the risk of overreach not uncommon with full-width keyboards. This keyboard employs moderate resistance tactile membrane keyswitches to provide feedback while typing and the centrally-positioned 0.875" diameter trackball provides smooth and accurate cursor control while eliminating the need for extended reach to the mouse on the right or left. Vertical scrolling is provided by a scroll wheel positioned just above the trackball and between the left and right space bars. All of the alpha-numeric keys are standard size, unlike many similar keyboards that have wider keys to create a more symmetrical appearance. This means that a consistent target is present for the fingers on all keys. The Function row of keys are half-height, to help reduce the depth of the keyboard footprint. The keycap legends are twice the size of standard legending, making this suitable where higher visibility is required.

While the keyboard does offer a split layout, the separation in the middle is quite limited when compared to other split keyboards, even earlier models from Adesso. The minimal separation limits the benefit that the split could otherwise provide. The splay angle is also less than most other fixed-splay keyboards, only around 24°. The minimal separation and the reduced splay will result in some degree of wrist deviation for all except those of very slender build.

The Wireless Ergonomic Mini Trackball Keyboard includes an integrated sloping palm support. Ccomposed of hard plastic that is fairly slippery, this can result in the hands slipping back off the keyboard. The shallow depth of the supports will most likely exacerbate this, so only those with the smallest of hands will actually be able to benefit from the proffered support. Both left and right Space Bar keys lack stabilization which leads to a variance in activation feel over the width of the spacebar.

The left and right alpha-numeric key groupings also feature slightly differing angles and keycap elevation. The left has both a slightly steeper angle and greater keycap elevation from row to row than the right key group. While the variance is not pronounced there may be those who find it significant enough to affect their positional proprioception.

• Cordless Convenience: The 2.4 gHz wireless connection can provide access up to 30 feet from the USB-A receiver.
• Built-In Trackball: The 0.875" integrated central trackball eliminates the need for a mouse to either side of the keyboard - eliminating any need to reach out past the keyboard. The trackball movement is very smooth and the trackball is large enough to provide a very good degree of control. Navigation, and scrolling are done with just a light tough of the finger. There are also manual Left and Right click buttons on either side of the trackball and a central Middle click button that surrounds the base of the trackball itself. Clicking the middle button gives access the autoscroll scroll function. With autoscroll engaged you just roll the trackball to scroll in the desired direction, then click either of the left or right buttons (or the trackball) to disable autoscroll and return to standard trackball function.
• Scroll Wheel: There is also a dedicated scrollwheel located just above the trackball - between the two spacebars.
• MultiMedia Hot Keys: 7 commands accessible (Play/Pause, Previous Track, Next Track, Volume Up, Volume Down, Mute)
• Integrated Palm Support: The Wireless Ergonomic Trackball Keyboard has a fixed integrated palm support. Those with longer hands may find it slightly shallow, leading to their hands wanting to slide back from the keyboard.
• Splayed and Tented Layout: The alpha-numeric keys offer about 24° of splay to reduce wrist deviation and about 10° of tenting to reduce pronation.

• Dimensions:
  Width: 13.8" (52.1 cm)
  Depth (front-to-back): 8.0" (20.3 cm)
  Height: 1.5" (3.8 cm)
• Weight: 1.75 lb (795 g)
• Keys: 87-Key US Layout
• Keyswitch Type: Membrane
• Indicators: Caps Lock, Low Battery
• Integrated Pointing Device: Trackball with Left and Right Buttons
• Trackball Specifications:
  Tracking Method: Optical Sensor
  Resolution: 1000 DPI
  Removable for Cleaning
• Integrated Scroll Wheel: A plastic scroll wheel with slight detents is positioned above the trackball, between the left and right spacebars
• Multimedia Hotkeys: 7 (Play/Pause, Previous Track, Next Track, Volume Up, Volume Down, Mute)
• Approvals: FCC, CE
• Compatibility: Windows 10 / 8 / 7
• Connection Interface: 2.4 gHz Wireless, USB-A Receiver Dongle
• Wireless Range: 30 feet (10 m)
• Power Source: 2 x AAA Batteries (included), Auto Sleep and On/Off Switch to preserve power.
• Battery Life Expectancy: Up to 6 months.
• Warranty: 1 Year - Manufacturer Direct
  No 30-Day Customer Satisfaction Guarantee
• Package Contents: Wireless Ergonomic Mini Trackball Keyboard, QuickGuide, USB-A Wireless Receiver, 2 x AAA Batteries