HP Z420 Workstation 16GB, 12GB SSD + 500GB HDD, Intel Xeon

• Front: 2 USB 3.0,
1 USB 2.0,
1 IEEE 1394a standard,
1 microphone in,
1 headphone out,
HP 22-in-1 Media Card Reader (optional)
• Rear: 2 USB 3.0,
4 USB 2.0,
1 IEEE 1394a standard ,
2 IEEE 1394b ports via optional add-in PCIe card,
1 audio in,
1 audio out,
1 microphone in,
2 PS/2,
1 RJ-45 to integrated Gigabit LAN,
1 serial via optional adapter
• Internal: 6 USB 2.0,
supports up to three HP Internal USB Port Kits (one two-port kit on each 2×5 header)