HP LaserJet Enterprise M806 Printer series - Manual (Page 14)

Interface ports
1
2
3
4
1 USB port for connecting external USB devices (this port might be covered)
2 Hi-Speed USB 2.0 printing port
NOTE: For Easy-access USB printing, use the USB port near the control panel.
3 Local area network (LAN) Ethernet (RJ-45) network port
4 Foreign interface harness (for connecting third-party devices)
6 Chapter 1 Product introduction ENWW