A:AnswerHP failed to put cartridges in the 1st batch of m402's. They've solver that problem since. I'm not sure they ever came with USB cables. Good news is they do include a power cable ;)
A:AnswerThis model has automatic duplexing so it can print both sides at once time. As for other print options, it varies based on the program you are using.
A:AnswerYes, the printer tray #1 is specifically made for that. If you use Word, it has a Mailing tab for that purpose. Just make sure you use Tray No. 1