Corsair ships the Air 540 in the company's typical brown box. Features and a blown-up image are found on one side of the packaging.
Mounting hardware and zip ties form the supplied bundle. As with the Obsidian 350D that we recently reviewed, Corsair doesn't supply the Air 540 with PSU screws.
For the sake of a few pennies, the power supply screws should be supplied.
A user manual provides surprisingly-helpful assistance when trying to navigate some of the Air 540's trickier installation procedures.