| CISCO3945E/K9 Specification | |
| Services and Slot Density | |
| Embedded hardware-based cryptography acceleration (IPSec + Secure Sockets Layer [SSL]) | Yes | 
| Cisco Unified Communications Manager Express Sessions | 450 | 
| Cisco Unified SRST sessions | 1500 | 
| Total onboard WAN or LAN 10/100/1000 ports | 4 | 
| RJ-45-based ports | 4 | 
| SFP-based ports | 2 | 
| Service-module slots | 4 | 
| Doublewide service-module slots | 1 | 
| EHWIC slots | 3 | 
| Doublewide EHWIC slots | 1 | 
| ISM slots | 0 | 
| Online insertion and removal (OIR) | Services modules | 
| Onboard DSP (PVDM) slots | 3 | 
| Memory DDR2 ECC DRAM: Default | 1 GB | 
| Memory DDR2 ECC DRAM: Maximum | 2 GB | 
| Compact Flash (external): Default | Slot 0: 256 MB | 
| Slot 1: None | |
| Compact Flash (external): Maximum | Slot 0: 4 GB | 
| Slot 1: 4 GB | |
| External USB 2.0 slots (Type A) | 2 | 
| USB console port (Type B) (up to 115.2 kbps) | 1 | 
| Serial console port (up to 115.2 kbps) | 1 | 
| Serial auxiliary port (up to 115.2 kbps) | 1 | 
| Power-supply options | Internal: AC, PoE, and DC* | 
| Redundant power supply | Internal: AC, PoE, and DC* | 
| Power Specifications | |
| AC input voltage | 100 to 240 VAC autoranging | 
| AC input frequency | 47 to 63 Hz | 
| AC input current range, AC power supply (maximum) | 7.1 to 3.0A | 
| AC input surge current | <50A | 
| DC Operating Input Voltage | 24Vdc - 60Vdc | 
| Max Input Current range, DC power supply | 33.2 - 12.4 | 
| DC Input Surge Current | <50A | 
| Typical power (no modules) (watts) | 158 | 
| Maximum power with AC power supply (watts) | 540 | 
| Maximum power with PoE power supply (platform only) (watts) | 540 | 
| Maximum endpoint PoE power available from PoE power supply (watts) | 520 | 
| Max power with DC input (W) | 574 | 
| Maximum endpoint PoE power capacity with PoE boost (watts) | 1040 | 
| Miscellaneous | |
| Dimensions (H x W x D) | 5.25 x 17.25 x 18.75 in. (133.35 x 438.15 x 476.25 mm) | 
| Rack height | 3 rack units (3RU) | 
| Rack-mount 19in. (48.3 cm) EIA | included | 
| Rack-mount 23in. (58.4 cm) EIA | optional | 
| Wall-mount | No | 
| Package Weight | 51.85 lb(23.52 kg) | 
| Weight with AC power supply (no modules) | 39 lb (17.7 kg) | 
| Weight with PoE power supply (no modules) | 40 lb (18.1 kg) | 
| Typical weight (with modules) | 60 lb (27.2 kg) | 
| Regulatory and Compliance | |
| Safety | UL 60950-1 | 
| CAN/CSA C22.2 No. 60950-1 | |
| EN 60950-1 | |
| AS/NZS 60950-1 | |
| IEC 60950-1 | |
| EMC | 47 CFR, Part 15 | 
| ICES-003 Class A | |
| EN55022 Class A | |
| CISPR22 Class A | |
| AS/NZS 3548 Class A | |
| VCCI V-3 | |
| CNS 13438 | |
| EN 300-386 | |
| EN 61000 (Immunity) | |
| EN 55024, CISPR 24 | |
| EN50082-1 | |
| Telecom | TIA/EIA/IS-968 | 
| CS-03 | |
| ANSI T1.101 | |
| ITU-T G.823, G.824 | |
| IEEE 802.3 | |
| RTTE Directive | |
 
                     
                
                 
                 
                        







 
                     
                     
                     
                     
                     
                     
                     
                     
                     
                     
                     
                    