Acer D501 is a pricey Works-With-Chromebook-certified USB-C dock
When a device or accessory is certified as "Works With Chromebook," it means that it will, well... work with Chromebooks. In other words, it is a promise or guarantee that the product is compatible with a computer running Google's Linux-based Chrome OS. With that said, many devices that aren't officially certified will work fine with Chromebooks as well. In fact, you may pay a premium for the "Works With Chromebook" certification when you really don't need to -- it is often nothing more than marketing nonsense.
Today, Acer unveils a Works-With-Chromebook-certified USB-C Dock, and the certification might actually be more than marketing-speak. Called "D501," it looks like your typical USB-C dock, and that is because it pretty much is. What makes it interesting -- other than its compatibility guarantee -- is upgradeable firmware. Yes, you can update the dock itself from within Chrome OS, and that is pretty darn cool. The dock can actually improve over time as Acer puts out updates for it.