Sound on a Dell Zero client
Make sure the client is on the HOME screen and not logged in to an RDS. If you are logged into an RDS hit the logoff button.
You will need a standard set of earbuds with a 3.5 mm jack. Plug them into the 3.5 mm to the jack on the front left of the Dell 3040. A pop-up window will appear at the bottom right of the screen.
Pick the option the goes along with the device you plugged in. Then Click OK.
Now you can join a session as normal with sound.