Printer on the 5th floor (room 504)
HP LaserJet Enterprise M506. 134.157.132.100.
Black and White, two-sided. To activate two-sided printing on MacOSX, one must check the box “duplex printing unit” in printer's settings.
Printer on the 4th floor
HP Pagewide MFP E77650. 134.157.132.111
Color, two-sided.
It is also a scanner and a copier (bring you own USB drive).
Other scanners
There is another scanner in office 518; bring you own USB drive.