The front panel of the 4220-12P-4X switch includes:
1 = Mode button
2 = System LEDs
3 = USB Type-A port
4 = 10/100/1000BASE-T out-of-band management port
5 = 12 x 10/100/1000Base-T 802.3at (30W) PoE ports
7 = 4 x 1/10Gb SFP+ uplink/stacking ports
8 = USB Micro-B console port
9 = Serial console port (RJ-45)
4220-12P-4X Front View
The rear panel of the switch includes:
1 = Grounding lug
2 = Power supply power cord input
4220-12P-4X Rear View
Note
This model supports silent mode operation at temperatures up to 35°C (95°F). Silent
mode requires 1 RU of free space above the switch. Fans function normally if the
temperature is between 35°C (95°F) and 50°C (122°F).
