Please choose the correct ending to complete the given sentence: Work World: [header] How to use padlock [title] Download the software. [step] It can be found at. Your mac will need to have os x 10.6 and it must have built-in or external loudspeakers.

Ending1: It is incredibly important to have it installed on your mac when checking your internet. [substeps] A copy of the downloaded file can also be added to your mac's browser. Ending2: Fortunately, the software can be found there. [title] Install keychain picker hack. Ending3: [substeps] Macos 9.6 and older is best due to their lack of quality. If you don't know the exact installation software, you can find it on google or dreamweaver. Ending4: [title] Install the software following the prompts. [title] Connect the i-devices using their own usb cables.

Answer format: ending1/ending2/ending3/ending4