Please choose the correct ending to complete the given sentence: Computers and Electronics: [header] How to install yamaha ds1x native audio sound card [title] Read the information about your sound card. [step] Check the instructions and guidelines which come with your sound card, they might contain important information about installation and drivers. [title] Unplug the computer.

Ending1: [step] Shut down the computer and unplug it from its power source. Unplug all the cables from the back of the computer. Ending2: [step] Exit the power source and unplug the dell 1.8 video/digital player (now labeled' usb drive'). Touch the control panel and select " computer ". Ending3: [step] If you want to do it yourself just disconnect the power from the computer. Once you are finished plugging in your sound card, shut the computer off and unplug the computer. Ending4: [step] Immediately detach the power cord from the original sound card using a socket wrench. [title] Wait for the computer to connect to the power source via a cable.

Answer format: ending1/ending2/ending3/ending4