A curious device - with a cult following... the Griffin PowerMate USB Controller is an aluminum USB knob/wheel that sits on your desk -- drawing the oohs and aahs of your friends.

The knob can be programmed to control various aspects of Mac OS X applications. Mangoman writes:


    You're only limited by the number of ways you can click + turn the knob. So, within any given app', you've got 6 options to program commands. I don't see myself using up all 6 within an app', but, for example, I programmed Safari to scroll up and down, and when I click the knob, it creates a new email window. Cool, I sez to myself. I'm thinking that there's a boatload of ways to use this in other apps, if only for the simple stuff. Glad I bought it.

Cost: $44.88

Popular Stories

MacRumors x Bloomberg Banner Cool

Apple Reportedly Plans to Unveil at Least Five New Products Next Week

Sunday February 22, 2026 9:48 am PST by
In his Power On newsletter today, Bloomberg's Mark Gurman said Apple will have a three-day stretch of product announcements from Monday, March 2 through Wednesday, March 4. In total, he expects Apple to introduce "at least five products." Subscribe to the MacRumors YouTube channel for more videos. A week ago, Apple invited selected journalists and content creators to an "Apple Experience" in...
maxresdefault

iPhone Fold: Launch, Pricing, and What to Expect From Apple's Foldable

Friday February 20, 2026 3:21 am PST by
Apple is expected to launch a new foldable iPhone this year, based on multiple rumors and credible sources. The long-awaited device has been rumored for years now, but signs increasingly suggest that Apple will release its first foldable device in 2026. Subscribe to the MacRumors YouTube channel for more videos. Below, we've collated an updated set of key details that have been leaked about ...
Apple Watch 15 Tips Every Owner Needs to Know Feature

Apple Watch: 15 Tips Every Owner Needs to Know

Thursday February 19, 2026 7:38 am PST by
Apple Watch is now eleven generations in, and packed with useful features that are easy to miss at first glance. To help you get more out of your new device, we've rounded up 15 practical tips you might not have discovered yet, including a few that long-time users often overlook. Bounce Between Two Apps On your Apple Watch, double-press the Digital Crown to see a deck of all currently...
iOS 26

iOS 26.3.1 Update for iPhones Coming Soon as 'Apple Experience' Nears

Sunday February 22, 2026 5:29 pm PST by
Apple's software engineers are testing iOS 26.3.1, according to the MacRumors visitor logs, which have been a reliable indicator of upcoming iOS versions. iOS 26.3.1 should be a minor update that fixes bugs and/or security vulnerabilities, and it will likely be released within the next two weeks. Last month, Apple released iOS 26.2.1 with bug fixes and support for the second-generation...
Low Cost A18 Pro MacBook Feature Pink

Three Upcoming Apple Products Seemingly Spotted in macOS 26.3 Code

Friday February 20, 2026 7:36 am PST by
macOS 26.3 hints at Apple's rumored lower-cost MacBook, and two new Studio Display models, according to Macworld's Filipe Espósito. Espósito found the following codenames within macOS 26.3's source code, and he revealed the upcoming products that they likely correspond with, based on previous reporting from Bloomberg's Mark Gurman and others. The codenames:J700: Lower-cost MacBook J427:...