

In any deployment scenario, whether AC or DC, the Cisco Catalyst 4500 Series has the power supplies and external power devices to meet customers' power needs for data, voice, and video applications.
| Minimum Cisco IOS Software required | 12.1(12c)EW |
| Minimum Cisco Catalyst Operating System Software required | 7.4(1) |
| Integrated PoE | Yes (up to 1400W) |
| IEEE 802.3af-compliant | Yes |
| Input current (rated) | 16A @ 200 VAC 31A @ -60VDC (data only) |
| Output current (data) | 12V @ 113.3A 3.3V @ 12.1A |
| Output current (PoE) | -50V @ 28A |
| Output power redundant mode (data) | 1360W + 40W |
| Output power redundant mode (PoE) | 1400W maximum per power supply |
| Output power combined mode (data) | 2473W |
| Output power combined mode (PoE) | 2333W |
| Heat dissipation | 2387 BTU/hr |
| Holdup time | 20 ms |
| Number of 802.3af Class 2 powered devices supported | 179 |
| Number of 802.3af Class 0 and 3 powered devices supported | 80 |

