Can you connect a CS520 to a computer?

Yes, if you add the Discover D315. But keep in mind you won't get remote call answering, so you won't be able to answer incoming calls with compatible softphones (Teams, Zoom, Ringcentral etc..) when away from the desk. 

If this feature is required, you'll want to look into a different wireless headset that's compatible with remote call answering. Contact us and we can verify compatibility for you.