A:AnswerNo, it doesn't need to be connected to work.
If you're offline it just won't have access to any updates you made on your work if it was on a different device unless you already backed it up.
A:AnswerThe ASUS CM3001DM2A Chromebook doesn't come with an alternative keyboard with black letters. However, you can purchase a replacement keyboard with black letters online. Websites like eBay or Amazon often have replacement keyboards for various laptop models, including ASUS.
A:AnswerThe ASUS CM3001DM2A has a USB 3.0 Type-C port that supports display and power delivery. This port can also be used to connect external storage devices.