Thank you for reaching out. This isn't a dumb question at all. You should be fine with just removing your HTC One from your computer. One option you can also do, when you are ready to disconnect, from your phone, swipe down as if you are going for your notifications and change the mode to Charge Only. You will then get a pop up on your computer saying that you are safe to disconnect.
Let me know if you have any other questions.
- *Kitty Sprint Social Care Team
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