Logitech ERGO M575S Review: The Quiet Update to a Favorite Thumb Trackball

The ERGO M575S is a right-handed, thumb-operated trackball. Your hand rests on a sculpted shell and your thumb moves the ball, so the device stays still and your arm does not travel across the desk the way it does with a mouse. Logitech lists it at 134 x 100 x 48 mm and 145 g, and says it is right-handed only (product page).

Logitech says the shape reduces forearm muscle strain compared with a standard mouse. That is Logitech's own claim, and no independent study has tested it on this model, as far as our research shows.

The shell is shared with the original ERGO M575, which Logitech gives identical dimensions and weight in its spec tables, so the long-running reviews of that model are a fair guide to the fit. RTINGS called the original M575 remarkably comfortable and suited to nearly all hand sizes with a palm or claw grip, and weighed its unit at 157.6 g against Logitech's lighter figure. Tom's Hardware, in a guide updated June 25, 2026, still names the original M575 its best trackball and describes it as comfortable with a small desk footprint.

There is no tilt adjustment. The M575S sits at one fixed angle, while Logitech's pricier MX Ergo S adds a tilting base. Left-handers should look elsewhere.

Logitech lists an Advanced Optical Tracking sensor with a maximum of 2000 DPI and a report rate of 125 Hz over the Logi Bolt receiver (specification page). Its pages disagree on the minimum: the product page gives a nominal 400 DPI, while the support specification says it starts at 100 DPI, adjustable in Logi Options+. Logitech has not said which is the true lower limit.

No outlet has measured the M575S sensor. RTINGS measured the original M575 and found a 400 to 2000 CPI range in 50-step increments, but that unit used a different receiver and different switches, so we do not carry its figures over.

Reviewers agree on the practical limits. Tom's Hardware found controlled flicks and steady tracking harder on the original M575 than on a mouse, which rules it out for most games. Root-Nation, which used the M575S itself, notes that the ball needs slight pressure and that fine control takes practice, and suggests turning on pointer acceleration. Wirecutter points out that there is no DPI button, so speed changes go through software.

The M575S has five buttons: left and right click, back and forward keys beside the ball, and a scroll wheel with a middle click (product page). Logitech's specification lists three of them as customizable in Logi Options+ (back, forward and middle click), although one FAQ answer says five. We go with the two specification sources.

Quiet clicks are the headline change from the original. Logitech calls the switches silent, rates the main buttons for three million clicks (specification page), and claims far less click noise than the ERGO M575. No reviewer has measured the noise. Wirecutter calls it a solid trackball with great build quality.

The wheel is basic. It has no side tilt, so there is no horizontal scrolling, and the original M575's wheel measured by RTINGS was notched with no free-spin mode. Wide spreadsheets and timelines are slower to move through than on Logitech's MX mice.

The M575S connects through a Logi Bolt USB receiver or Bluetooth Low Energy, with a stated range of 10 m (product page). Logi Bolt replaces the Unifying receiver of the original M575, and Logitech says the M575S does not work with Unifying receivers. If your keyboard uses Unifying, you cannot share one dongle.

A single AA battery, included in the box, powers it for up to 18 months, according to Logitech's specification page. One product-page FAQ answer says up to 20 months over Bluetooth, which matches the older M575's rating, so we use the 18-month figure from the spec sheets. The receiver stores inside the battery door (Getting Started guide), which helps when you carry it in a laptop bag.

Multi-device use is limited. The Connect button on the underside switches pairing, but Wirecutter says the M575S pairs to only one device over Bluetooth. Tom's Hardware ran the original M575 on one receiver device and one Bluetooth device at once. Logitech does not state whether the M575S keeps both pairings at the same time.

The AA battery cuts both ways. There is nothing to recharge for more than a year, but Wirecutter lists the lack of a rechargeable battery as a drawback.

The body is made from partly recycled ABS plastic with an epoxy-coated ball, according to Logitech's specification page. Wirecutter calls the build quality great, and Root-Nation notes that the M575S body is plain plastic where the MX Ergo S has a rubberized finish.

Trackballs collect dust and skin oil on the small supports that hold the ball, which makes the ball feel sticky over time. The M575S makes cleaning easy: you push the ball out through the eject hole on the underside, wipe the supports and drop it back in (Logitech FAQ). No owner threads specific to the M575S could be opened for this review, so we cannot say how often it needs cleaning in practice.

The US warranty is one year (product page). The otherwise similar ERGO M575 for Business, which also uses Logi Bolt and quiet clicks, carries two years (Logitech Business page).

Logitech launched the M575S on September 13, 2024 at the same list price as the original M575 (Logitech announcement), and the original now shows as unavailable on Logitech's US store (M575 page). Current prices appear in the offers table on this page.

It is not the only sensible thumb trackball. Wirecutter, updated June 16, 2026, picks the Nulea M501 and Logitech's MX Ergo S ahead of it, citing the M575S's AA battery, missing DPI button and single Bluetooth pairing. The UGREEN M785DR's Amazon listing claims a rechargeable battery, three-device switching and a tilting wheel (UGREEN listing), although no independent test backs those claims yet. ELECOM's IST PLUS uses bearing supports and three connection channels, per its manual.

The M575S earns its price through comfort, quiet clicks and long battery life from a brand with mature software. If you would rather keep a conventional grip, our Logitech Lift review covers Logitech's vertical mouse for the same goal of reducing strain.