===== 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.