The two most common types of connectors for audio jacks are a 2 ring (3 conductor) connector and a 3 ring (4 conductor) or Tip, Ring, Ring Sleeve (TRRS) connector. Using a headphone/microphone on a Latitude laptop This allows for private audio using headphones, and the rear jack is enabled when the headphones are disconnected. Rear audio port on an OptiPlex desktop is disabled when headphones are plugged into the front audio portīy design, when a headphone or headset is connected to the audio port on the front panel, the rear audio port is disabled. The rear audio port on a Dell OptiPlex desktop is disabled when a headphone is connected to the front audio port.Using a headphone/microphone combo connector on Dell Latitude laptops.This is normal bahaviour for XPS Laptop AC adapters for computers made after April 2022. When the USB Type-C connecter is plugged into the computer, the Adpater LED will flash six times in twelve seonds then turn off. ![]() When connected to the wall outlet, the LED will illuminate for 10 seconds then turn off. This feature was added to reduce light pollution in low light environments. ![]() NOTE: XPS laptops purchased after April 2022, have AC Adapter LEDs that turn off after the AC adapter is connected to AC power or connected to the computer.
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