The Pro Fit Ergo Vertical Wired Trackball from Kensington offers thumb-operated cursor control that eliminates the traditional arm and hand movement required with a traditional mouse. It also moves the hand and forearm away from a prone position by angling the hand outward at 60°. The 34 mm trackball offers silky-smooth movement with adjustable optical tracking from 400-800 DPI. The contoured body provides a support for the hand, naturally positioning the fingers over the right and left buttons. Side scrolling function is provided by a tilting scroll wheel that features crisp detents, conveniently positioned between these buttons to complete the traditional mouse control layout. The index finger has easy access to convenient Back and Forward Buttons for browsing through multiple pages of a document or web page. The Pro Fit Ergo Vertical Wired Trackball has a hardwired connection that ensures reliable signal for both clicking and cursor control.

As the Pro Fit Ergo Vertical Wired Trackball places the workload fully upon the thumb, (which on most other trackballs is generally shared by several fingers), anyone who has existing thumb issues would be well-advised to consider alternative solutions.

For those who prefer the freedom of a wireless device this trackball is also available as the Pro Fit Ergo Vertical Wireless Trackball.

The Pro Fit Ergo Vertical Wireless Trackball from Kensington offers thumb-operated cursor control that eliminates the traditional arm and hand movement required with a traditional mouse. It also moves the hand and forearm away from a prone position by angling the hand outward at 60°. The 34mm trackball offers silky-smooth movement with adjustable optical tracking from 400-1500 DPI. The contoured body provides a support for the hand, naturally positioning the fingers over the right and left buttons. Side scrolling function is provided by a tilting scroll wheel that features crisp detents, conveniently positioned between these buttons to complete the traditional mouse control layout. The index finger has easy access to convenient Back and Forward Buttons for browsing through multiple pages of a document or web page.

The Pro Fit Ergo Vertical Wireless Trackball offers Dual Connectivity that can simultaneously support connections to up to 3 computers or devices (1 via the included 2.4 GHz receiver and up to 2 more via Bluetooth.

As the Pro Fit Ergo Vertical Wireless Trackball places the workload fully upon the thumb, (which on most other trackballs is generally shared by several fingers), anyone who has existing thumb issues would be well-advised to consider alternative solutions.

The TrackMan Marble from Logitech is a space-saving ambidextrous trackball with a well-established record. Somewhat unique to the TrackMan Marble is the forward placement of the 40 mm trackball which sees the ball positioned almost at the very front of the unit. This puts it directly under the fingertips of the ring, index and middle fingers, freeing users to employ any or all of these in providing cursor control. The long Left and Right click buttons are located further back along the sides of the trackball body, providing easy access for the thumb and ring or pinky finger. Small inset secondary buttons offer web browser Backward and Forward commands. Cursor control on the Trackman Marble is very smooth and accurate, with the ball weighing enough that response is easily controlled. The weight of the ball is also great enough to enable users to "spin" it for rapid movement across large areas or multiple screens.

The narrow design of the TrackMan Marble is best suited to users with small to average-sized hands as those with larger or wider hands may tend to "pinch" the trackball in order to maintain placement. However, the length of the body and the primary buttons does mean that users with longer hands can accomplish excellent cursor control while still easily performing click actions.

Some users may find the absence of a dedicated scroll feature on the TrackMan Marble less than ideal. However this concern can to a great extent be addressed by installing and running the customization software available from Logitech which can enable the trackball to be used as a scrollwheel (on PCs) or the Back/Forward buttons as Scroll Up/Down (on MACs).

Note:Unlike many trackballs, the ball on the Trackman Marble is easily removed from the housing for cleaning.

The PC-Trac Switch Adapted trackball from Clearly Superior Technologies offers alternative clicking options available to users who may struggle with fine motor control. It features 3 jacks which permit the attachment of external control switches which can be placed where best suited to the needs of the individual user.

All of the features of the basic PC-Trac—high density 2.5" diameter phenolic trackball for tactile feedback and smooth response, light touch buttons, safely secured trackball, low profile housing, ambidextrous feature, 'Dynamic Acceleration', Drag Lock and Scroll Lock—are available on the Switch Adapted version.

The extra-large size, low activation force and large dimensions of the buttons also mean that anyone with limited strength will be able to perform clicks as easily as any user.

Users who have vision limitations may wish to consider the high visibility KidTrac Switch Adapted or the high performance L-Trac Switch Adapted versions which feature white housings with yellow trackballs and red, blue, and green buttons.

If you're looking for a thumb-operated trackball with an easy-to-use scroll and zoom wheel, the gently curved 3-button TrackMan Wheel is precisely the right tool. This is the closest product to the discontinued Logitech Marble FX Trackball.

This trackball has been designed to improve computer access where the user may have difficulties with a conventional mouse or prefer the ease of use of this product. A superbly engineered trackball, the Roller II offers value for money and has proved to be very popular with users of all ages. Captive fasteners in the base allow the device to be attached to a desk or a wheelchair tray. There is a removable keyguard to provide guidance as needed for pressing the buttons.

To see examples of switches which can be used with this trackball, check out our Switches category.

Note: Due to supply issues access to this product is severely limited. You may wish to consider one of the following as an alternative:
Optima Trackball
OptimaX Wireless Trackball

This is the deluxe version of the Trackball Roller II, and has 3 additional buttons on the unit; a Double Click button, a Speed Control (acceleration) button, and an X-Axis / Y-Axis Lockout button (to limit the movement to only the X or Y Axis if needed). This is truly the ultimate assistive trackball on the market today. This mouse alternative is ideal for users with severe motor-skill difficulties.

To see examples of switches which can be used with this trackball, check out our Switches category.

NOTE: Due to supply issues access to this product is severely limited. You may wish to consider the following options as alternatives: n-ABLER Trackball
n-ABLER PRO Trackball

The L-Trac from Clearly Superior Technologies combines a high level optical sensor capable of resolutions up to 1600 CPI (counts per inch) with the robust build for which the original PC-Trac line is well-known. The L-Trac features an optical laser sensor that offers "button selectable" tracking resolutions of 400, 800 and 1600 CPI, easily changed on the fly. Combined with this is the ability of the L-Trac to track at speeds exceeding 30 inches per second, even at a 20G acceleration rate. An optional scroll wheel (available on select models) is smooth and readily accessible, located above the center button.

The L-Trac provides users with a precision, high performance pointing device. The large 57 mm diameter weighted trackball produces predictable, quick, and precise cursor control. Most users will find that movement becomes intuitive within a few minutes of use, with the level of control increasing over time.

The level of performance and range of features, coupled with the proven contour of the L-Trac makes these trackballs an appropriate option for all applications including general computing, gaming and Computer Aided Design (CAD). CAD users love it because you can drag a line one pixel even on high resolution displays. Then, with a button stroke, they can fly around the screen to get general tasks done. Gamers have called it an "almost unfair advantage", citing the fingertip control and precision, high performance tracking.

Designed to minimize the effects of contamination build up and the resultant degradation of performance, this high performance laser trackball uses highly polished stainless steel rollers. It has been found by CST that the "ruby ball sliders" used in most optical trackballs, cause performance degradation when gunk builds up on them. The L-Trac uses mirror polished stainless steel rollers do not readily collect unwanted material and are easily cleared by spinning the ball rapidly. The Dupont Delrin bearings are embedded with Teflon and internally coated with a lifetime lubricant making the feel of this trackball extremely smooth and it's reliability very robust. The user-replaceable stainless steel rollers are extremely tough and designed to handle hard usage yet still provide users with controlled smooth movement.

The L-Trac is now available from PI Engineering as the X-Keys L-Trac