Model:
ASA5520-UC-BUN-K9 Unified Communications
Detail:
ASA 5520 UC Bundle With 1000 UC Proxy Sessions, 3DES/AES, Cisco ASA 5500 Series Unified Communications Edition Bundles
RAM Installed ( Max )
2 GB
Flash Memory Installed (Max)
256 MB
Networking
Form Factor
Rack-mountable
Connectivity Technology
Wired
Data Link Protocol
Ethernet, Fast Ethernet, Gigabit Ethernet
Network / Transport Protocol
IPSec
Capacity
IPSec VPN peers : 750 
SSL VPN peers : 2 
UC proxy sessions : 1000
Features
Firewall protection, VPN support, VLAN support
Encryption Algorithm
Triple DES, AES
Connectivity Slots
Expansion Slot(s)
1 expansion slot
Interfaces
4 x network - Ethernet 10Base-T/100Base-TX/1000Base-T - RJ-45 
1 x network - Ethernet 10Base-T/100Base-TX - RJ-45 
1 x management - console - RJ-45 
1 x serial - auxiliary - RJ-45 
2 x Hi-Speed USB - 4 pin USB Type A
Miscellaneous
Compliant Standards
CE, FCC Class A certified, CISPR 22 Class A, EN 60950, EN 61000-3-2, UL 1950, VCCI Class A ITE, IEC 60950, EN 61000-3-3, CSA 22.2 No. 950, EN55022 Class A, ACA TS001, AS/NZS 3260, FCC Part 15
Power Supply
Power Device
Power supply - internal
Voltage Required
AC 120/230 V ( 50/60 Hz )