Acer 505 series - Manual (Page 82)

4 Moving with your computer 60
Setting up a home office
If you frequently work on your computer at home, it may be worthwhile to
purchase a second AC adapter for use at home. With a second AC adapter, you can
avoid transporting the extra weight to and from home.
If you use your computer at home for significant periods of time, you might also
want to add an external keyboard, monitor, or mouse.