Additional input trays minimize the time spent for paper refills. The overall output capacity minimizes job retrieval frequency. Automatic job separation & finishing reduce waste of time for manual tasks around print jobs. All paper handling products are easy to install by any employee with a basic knowledge of IT products. This is a 2x 500 Sheet Input Tray for HP Laser Jet 8100 & 8000 printer families. It Adds a 4th & 5th input sources for capacity of 2100 sheets.