Model: Cisco 3925
 
Services and Slot Density
Embedded hardware-based cryptography acceleration (IPSec + Secure Sockets Layer [SSL]): Yes
Cisco Unified Communications Manager Express Sessions: 250
Cisco Unified SRST sessions: 730
Total onboard WAN or LAN 10/100/1000 ports: 3
RJ-45-based ports: 3
SFP-based ports: 2
Service-module slots: 2
Doublewide service-module slots: 1
EHWIC slots: 4
Doublewide EHWIC slots: 2
ISM slots: 1
Online insertion and removal (OIR): Services modules
Onboard DSP (PVDM) slots: 4
Memory DDR2 ECC DRAM: Default: 1 GB
Memory DDR2 ECC DRAM: Maximum 2GB
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 (A): 33.2 - 12.4
DC Input Surge Current: <50A
Typical power (no modules) (watts): 100
Maximum power with AC power supply (watts): 420
Maximum power with PoE power supply (platform only) (watts): 420
Maximum endpoint PoE power available from PoE power supply (watts): 520
Max power with DC input (W): 446