will it work with mac os 10.10 yosemite?

I use it daily on Catalina (10.15) and Big Sur (11.0 and now 11.5) The initial upgrade to Big Sur was slightly painful with the KensingtonWorks software, but they claim support for versions much earlier than Yosemite, so it should work. Just don't count on a smooth process if you ever bring yourself up to date.

Any plans for the same mouse without the track ball?

search for ergonomic mouse instead of ergonomic trackball

Is there a white wired version?

I'm sorry that we only have black version for Pro Fit Ergo Vertical Trackball. The Kensington Team

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Kensington Pro Fit™ Ergo Vertical Wired Trackball Mouse, Easy Thumb Control, Precision and Smooth Tracking, Ergonomist-Approved Design and Ambidextrous for Windows, PC and Mac (Black)

Product ID: 441210269

Details

Brand
Kensington
Colour
Black
Connectivity Technology
USB
Movement Detection Technology
Trackball
Special Feature
Wireless

🎯800 DPI precision control

🔄9 customizable buttons

🔌Reliable wired USB connection

Description

🎯 Elevate your workspace with precision and comfort — because your hands deserve the best.

PLUG PLAY SIMPLICITY - Instant setup with USB wired connection—no batteries, no interference.
CLEAN MAINTAIN WITH EASE - Quick-release trackball design keeps your device performing flawlessly.
CUSTOMIZABLE COMMAND CENTER - Nine programmable buttons let you streamline workflows with one touch.
ERGONOMIST APPROVED COMFORT - Designed to align wrist, arm & shoulder for all-day strain-free productivity.
PRECISION AT YOUR FINGERTIPS - Switch DPI settings effortlessly for smooth, pixel-perfect cursor control.

The Kensington Pro Fit Ergo Vertical Wired Trackball Mouse combines ergonomist-approved design with premium 800 DPI precision and a wired USB connection for uninterrupted performance. Featuring nine customizable buttons and an easy-to-clean trackball, it’s built for professionals seeking comfort, accuracy, and efficiency on both Mac and PC platforms.

Specifications

ASIN	B08QC9NFM9
Antenna Location	Office
Are Batteries Included?	No
Are Batteries Required	No
Battery Average Life	12 Months
Best Sellers Rank	#42,222 in Computers & Accessories ( See Top 100 in Computers & Accessories ) #8 in Trackballs
Brand Name	Kensington
Button Quantity	9
Colour	Black
Compatible Devices	Personal Computer, Laptop
Customer Reviews	4.0 4.0 out of 5 stars (186)
EU Spare Part Availability Duration	3 Years
Enclosure Material	Plastic
Global Trade Identification Number	00085896752561
Hand Orientation	Ambidextrous
Hardware Platform	Mac, PC
Importer Contact Information	Interface Connectronics Pvt Ltd, # 85, Unit # 3, First Floor V.V.Yoga Saurabha, S.C.Road, Yeshwanthpur, Bangalore, India 560022, Contact: +91-9739952969, [email protected]
Included Components	vertical trackball
Item Dimensions L x W	7.6L x 20W Centimeters
Item Type Name	Trackball
Item Weight Unit of Measure	0.2 Kilograms
Manufacturer	ACCO Brands Asia Pte Ltd, 2 International Business Park Tower 2 #05-31/32, The Strategy, Singapore 609930, Contact: +65-67760195, [email protected], Kensington
Manufacturer Contact Information	ACCO Brands Asia Pte Ltd, 2 International Business Park Tower 2 #05-31/32, The Strategy, Singapore 609930, Contact: +65-67760195, [email protected]
Manufacturer Part Number	K75256WW
Minimum Required Operating System Version	Mac OS 10.13 High Sierra
Model Name	Pro Fit Ergo
Model Number	K75256WW
Mouse Maximum Sensitivity	800 Dots per Inch
Movement Detection	Trackball
Network Connectivity Technology	USB
Operating System	Chrome OS, Mac OS 10.13 High Sierra, Windows 8
Packer Contact Information	Interface Connectronics Pvt Ltd, # 85, Unit # 3, First Floor V.V.Yoga Saurabha, S.C.Road, Yeshwanthpur, Bangalore, India 560022, Contact: +91-9739952969, [email protected]
Pattern	Trackball
Power Source	Corded Electric
Product Features	Wireless
Range	10.0 meters
Style Name	Wired
Theme	Video Game
UPC	085896752561
Unit Count	1 Count
Warranty Description	Limited 3 year warranty

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