ZyXEL ZyWALL USG 20W, Unified Security Gateway

Hardware Specifications
10/100/1000 interfaces (Copper) 4 x LAN/DMZ, 1 x WAN
USB ports 1
Card slot -
System Capacity & Performance*1
SPI firewall throughput*2 (Mbps) 175
VPN throughput (AES)*3 (Mbps) 75
UTM throughput (AV+IDP)*4 (Mbps) -
Unlimited user licenses Yes
Max. sessions*5 10,000
New session rate 1,000
Max. concurrent IPSec VPN tunnels 5
Max. concurrent SSL VPN users 1
Included SSL VPN users 1
Customizable zone Yes
IPv6 support Yes
Built-in Wireless LAN
Standards 802.11 b/g/n
Antennas 2 detachable
Wi-Fi throughput*6 (Mbps) 80
Maximum output power 802.11b: 18.5 dBm @ 11 Mbps
802.11g: 15.5 dBm @ 54 Mbps
802.11n: 15.5 dBm @ 20 Mbps
Radio sensitivity 802.11b: ≤ -83 dBm @ 11 Mbps
802.11g: ≤ -70 dBm @ 54 Mbps
802.11n: ≤ -64 dBm @ 20 Mbps
Power Requirement
Input voltage 100 - 240 V AC, 50/60 Hz, 1.5 A
Power rating 16 W Max
Power consumption (watt) 16
Physical Specifications
Item Dimensions (WxDxH)(mm/in.) 216 x 140 x 33/8.50 x 5.51 x 1.30
Weight (kg/lb.) 0.42/0.93
Packing Dimensions (WxDxH)(mm/in.) 305 x 205 x 106/12.01 x 8.07 x 4.17
Weight (kg/lb.) 1.1/2.43
Environmental Specifications
Operating temperature 0°C to 40°C/32°F to 104°F
Storage temperature -30°C to 60°C/-22°F to 140°F
Operating humidity 5% to 90% (non-condensing)
MTBF (hr) 301,502

Note:
*1: Actual performance may vary depending on network conditions and activated applications.
*2: Maximum throughput based on RFC 2544 (1,518-byte UDP packets).
*3: VPN throughput measured based on RFC 2544 (1,424-byte UDP packets).
*4: UTM (AV and IDP) throughput measured using the industry standard IXIA IxLoad testing tool (1,460-byte HTTP packets).
*5: Maximum sessions measured using the industry standard IXIA IxLoad testing tool.
*6: Wireless throughput measured using the industry standard IXIA IxLoad testing tool (802.11n, 20 MHz, WPA2-PSK).