The MX Ergo Wireless Trackball from Logitech shares many design features with the M570 Wireless Trackball. The body contours are virtually identical, with more angular lines and a metallic grey trackball to distinguish it from the M570. The differences focus on improved ergonomics and expanded functionality. The MX Ergo Wireless Trackball features a magnetic base plate on which the trackball can be angled to either 0° or 20° by a simple shift of pressure from the hand and the included 10° accessory wedge can be installed to offer a 10° to 30° option.

The MX Ergo Trackball transfers all cursor control to the thumb, which virtually eliminates arm movement when mousing. Accurate adjustable optical tracking is provided by a 380 DPI laser sensor with a thumb-activated Precision Mode button. The contoured body provides a relaxing support for the hand, naturally positioning the fingers over the right and left buttons. A rubber-coated tilting scroll wheel with crisp detents is 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 MX Ergo Wireless Trackball offers Dual Connectivity - USB via the included Logitech Unifying receiver, or Bluetooth (see Detailed Specifications for compatibility details). Those working with multiple computers at a time may wish to take advantage of the "Logitech Flow" capability to connect with and work seamlessly across two separate computers.Note: As the MX Ergo 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 Ergo M575 Wireless Trackball from Logitech replaces the earlier M570 Wireless Trackball, offering improved connectivity options. Like its predecessor, the M575 takes most of the repetitive movements and strain which the entire hand usually must perform and allocates all the workload to the thumb. Accurate optical tracking is provided by a laser sensor that offers 400-2000 DPI resolutions. With a contoured body that provides a relaxing support for the hand, the Ergo M575 is equipped with a scroll wheel and right and left click buttons, all positioned as with a traditional mouse. In addition there are Back and Forward Buttons for convenience when browsing through multiple pages. The trackball body is shaped to let the hand rest in a natural relaxed position. As with the earlier M570 model, the M575 is best suited to those with small- or average-sized hands.

Connection can be made via either Bluetooth or the storable USB mini receiver, with a single AA battery providing up to 2 years of service. A battery life indicator will advise when the battery needs replacing. Software available from Logitech offers customization of trackball functions and performance.

Note: As the Ergo M575 places the workload fully upon the thumb, (which on most other trackballs is generally shared amongst several fingers), anyone who has existing thumb issues would be well-advised to consider alternative solutions.

The Ergo K860 Keyboard from Logitech features a flowing design that orients keys at varying angles across the keyboard. The K860 alpha/numeric keys transition through a concave arc from almost level at the centre to about 5° at the right and left edges. The navigation cluster on the right then completes the transition to a fully flat numeric keypad. The left and right key groups are also angled or "splayed" outward to encourage adoption of a more neutral alignment of the wrists. The Ergo K860 also has an attached 3.5" deep cushioned palm support which rises up to match the keyboard elevation. This needs to be taken into consideration when deploying the K860 into a workstation.

While the K860 has a slender low profile the angled design results in the middle keys being elevated to 1.5". This elevation may require individuals to either raise their seats to accommodate the height of the keyboard or to use a keyboard tray to lower the keyboard into their lap. The keyboard is also equipped with front legs that can be used to raise the front to create either 4° or 7° negative slope intended to encourage better wrist alignment. Use of these legs may require further adjustments of seat or keyboard tray height because it adds another inch of elevation to the middle of the palm support and increases the risk of pressure points being created on the underside of the wrists.

The K860 features low-travel scissor switches with chiclet-style keycaps. Key activation is crisp and comparatively high force compared to other scissor switch devices and does require a significant degree of activation force. The low profile keycaps have a satin texture with a slight concave surface to aid in finger positioning.

The M570 Wireless Trackball takes most of the repetitive movements and strain which the entire hand usually must perform and allocates all the workload to the thumb of the user. Accurate optical tracking is provided by a 570 DPI laser sensor housed below the ball. With a contoured body that provides a relaxing support for the hand, the M570 is equipped with a scroll wheel and right and left click buttons, all positioned as with a traditional mouse. In addition there are Back and Forward Buttons for convenience when browsing through multiple pages.

Connection is via a storable USB mini receiver and a single AA battery can provide up to 18 months of service. A battery life indicator will advise when the battery needs replacing. Software available from Logitech enables users to customize their trackball functions and performance.

Note: As the M570 places the workload fully upon the thumb, (which on most other trackballs is generally shared amongst several fingers), anyone who has existing thumb issues would be well-advised to consider alternative solutions.

The Wave Keys Keyboard from Logitech features a wave-style layout that inclines slightly upward at the middle. The keys also sweep upward to the left and right to encourage a very limited reduction in ulnar deviation at the wrists. Unlike other keyboards of this style which offer a distinct separation of the keys along the center of the keyboard, there is no separation, which requires that the hands be brought to a central position that will require lateral deviation for most typists. As well, unlike other wave-style keyboards that fan the keys in a downward curve that mirrors the descending lengths of the ring and pinkie fingers, the Wave Keys sweep upwards across the entire alpha/numeric keys. This can lead to awkward stretching or repositioning of the entire hand for the ring and pinkie fingers to access the outer keys. Those with smaller hands will most likely find this reach even more significant. The rather rapid transition from the upward sweep of the alpha numeric keys to the level keys of the numeric keypad may also lead to regular ulnar deviation when transitioning back and forth from home row position to the numeric keypad or mouse.

The Wave Keys Keyboard features low-travel membrane switches which require a significant degree of force for activation. The keycaps are crowned and concave to assist in targeting but have a reduced horizontal and vertical pitch of 18.5mm (19.0mm is standard) which may leave some, especially those with larger hands and fingers, feeling crowded, especially with the upward sweep curving the keys inward towards each other. Included is an integrated 3.25" deep cushioned palm support with an cleanable surface. The righthand numeric keypad and repositioned navigation keys classify this keyboard as a compact financial keyboard despite a fairly significant 8.4" reach from home row to the right edge of the keyboard, something that should be taken into consideration when determining suitability.

The Wave Keys Keyboard is powered by two AAA batteries and is able to connect via either the included Wireless Logi Bolt receiver or via bluetooth.

The MX Vertical Advanced Ergonomic Mouse from Logitech is their first attempt at offering a mouse which more aggressively reduces pronation than other mice in their line. The body of the MX Vertical is angled at a fixed 57° to reduce the risks associated with pronation of the forearm. The angled body is designed to provide the support necessary for the hand to "relax" while engaged with the mouse. However, those with smaller or narrower hands may find that they need to maintain a degree of tension to hold their hands "up" in position over the buttons. Large or wide hands will likely have less of a problem with this requirement to maintain hand position.

The MX Vertical is equipped with a top quality sensor capable of reading from 400 - 4000 DPI. Two nominal settings of 1000 and 1600 DPI can be adjusted anywhere within the range in 50 DPI increments. The top-mounted DPI button enables users to adjust the mouse as needed for basic or fine control movements. The scroll wheel has a rubber tire for grip and features distinct but soft detents. There are 4 programmable buttons (left, right, back, & forward).

The MX Vertical offers 3 connection options: Wired via the charging cord, 2.4Ghz Logitech Unifying Receiver with an operation distance up to 33 feet, and Bluetooth (Bluetooth Low Energy Technology required). The 270mAh Li-Po rechargeable battery can provide up to 4 months use on a single charge and offers a 1 minute Quick Charge that can provide up to 3 hours of use. Of course, individual usage may affect this. Using Logitech "FLOW" users are able to connect to and control up to 3 computing devices using a single mouse.

The "flatness" of the buttons on the MX Vertical prohibit the fingers from achieving a fully relaxed and naturally curved "position of function". This factor, combined with the almost slick surface on the buttons could lead users to try to "pinch" the mouse between the thumb and fingers in an attempt to achieve a better sensation of "control". In addition, to minimize the activation force on the buttons the fingertips need to be as close to the end of the buttons as possible. Those with large hands or very long fingers may be able to achieve this position but most users will find their fingertips falling short of this "optimum" position, resulting in a higher force being required for click activation.

The Touch Lapdesk N600 from Logitech keeps your lap cool while you are busy typing on your laptop or navigating using the pull-out wireless touchpad featuring three levels of gestures: one finger to move the cursor, two for scrolling, and three for swiping through pages or pictures. The 5-inch touchpad easily stores in the device when not in use. Just plug in the Logitech Unifying receiver into a USB port and you are ready to go.

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.

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.

With Logitech's Performance Mouse MX you can track virtually anywhere - even on a glass desk - with Logitech Darkfield Laser Tracking. Turn the world into your mouse pad. This new mouse also incorporates the Logitech Unifying receiver - the tiny, wireless receiver that stays in your notebook and lets you add devices as you need them. Plug it. Forget it. Add to it.

The micro-USB recharging system lets you use the mouse even when it's charging. You'll fly through documents and Web pages with a single spin. Click-to-click scrolling gives you the precision you need when navigating lists, slides, and images. Designed to fit your hand and put it in a comfortable, natural position, the Performance Mouse MX also has customizable thumb buttons to help you do more, faster. Move backward or forward through Web pages, zoom in or out on photos, and jump between open windows.

Note: Although this is the recommended replacement for the MX Revolution Mouse, the revised shape makes one's hand more pronated (i.e. flatter) on this version than the old MX Revolution Mouse.