HP Color LaserJet Enterprise M751n Laser Printer - Manual (Page 16)

Interface ports
2
1
3
1 USB ports for connecting external USB devices (these ports might be covered)
NOTE: For easy-access USB printing, use the USB port near the control panel.
2 Local area network (LAN) Ethernet 10/100/1000 network port
3 Hi-Speed USB 2.0 printing port
6 Chapter 1 Printer overview ENWW