Product comparison · 2 hardware firewalls

Zyxel Firewall USG FLEX vs Zyxel USG20W-VPN hardware firewall 0.35 Gbit/s

14specifications compared
8differ
6identical
34known for one product only

Key differences

The Zyxel Firewall USG FLEX has 1.45 Gbit/s more firewall throughput than the Zyxel USG20W-VPN hardware firewall 0.35 Gbit/s (1.8 Gbit/s vs 0.35 Gbit/s). The Zyxel Firewall USG FLEX has 0.36 Gbit/s more VPN throughput than the Zyxel USG20W-VPN hardware firewall 0.35 Gbit/s (0.45 Gbit/s vs 0.09 Gbit/s). The Zyxel USG20W-VPN hardware firewall 0.35 Gbit/s has 16 BTU/h more heat dissipation than the Zyxel Firewall USG FLEX (61.38 BTU/h vs 45.38 BTU/h).

Firewall throughput
- Firewall USG FLEX:1.8 Gbit/s
- USG20W-VPN hardware firewall 0.35 Gbit/s:0.35 Gbit/s
VPN throughput
- Firewall USG FLEX:0.45 Gbit/s
- USG20W-VPN hardware firewall 0.35 Gbit/s:0.09 Gbit/s
Heat dissipation
- Firewall USG FLEX:45.38 BTU/h
- USG20W-VPN hardware firewall 0.35 Gbit/s:61.38 BTU/h
Mean time between failures (MTBF)
- Firewall USG FLEX:529688.2 h
- USG20W-VPN hardware firewall 0.35 Gbit/s:44000 h
Ethernet LAN (RJ-45) ports
- Firewall USG FLEX:6
- USG20W-VPN hardware firewall 0.35 Gbit/s:4
Weight
- Firewall USG FLEX:1.4 kg
- USG20W-VPN hardware firewall 0.35 Gbit/s:1.14 kg
Firewall throughput
- Firewall USG FLEX:1800 Mbit/s
- USG20W-VPN hardware firewall 0.35 Gbit/s:350 Mbit/s
VPN throughput
- Firewall USG FLEX:450 Mbit/s
- USG20W-VPN hardware firewall 0.35 Gbit/s:90 Mbit/s

Side by side

Differences highlightedShow differences only

Comparison of Firewall USG FLEX, USG20W-VPN
48 specifications	A Zyxel Firewall USG FLEX View product	B Zyxel USG20W-VPN hardware firewall 0.35 Gbit/s Model USG20W-VPN View product
Data transmission2 differ
Firewall throughputDiffers	1.8 Gbit/s	0.35 Gbit/s
VPN throughputDiffers	0.45 Gbit/s	0.09 Gbit/s
IPSec VPN throughputKnown for one	100 Gbit/s	Unknown — not stated by the source
SSL performanceKnown for one	60 transactions/sec	Unknown — not stated by the source
Performance2 differ
Heat dissipationDiffers	45.38 BTU/h	61.38 BTU/h
Mean time between failures (MTBF)Differs	529688.2 h	44000 h
Antenna gain level (max)Known for one	Unknown — not stated by the source	3 dBi
Antennas quantityKnown for one	Unknown — not stated by the source	3
Networkidentical
Concurrent SSL/VPN connections (default)Known for one	60	Unknown — not stated by the source
Concurrent SSL/VPN connections (maximum)Known for one	200	Unknown — not stated by the source
Active TCP connections (max)Known for one	600000	Unknown — not stated by the source
Number of VLANsKnown for one	16	Unknown — not stated by the source
Wi-FiKnown for one	Unknown — not stated by the source	Yes
Wi-Fi standardsKnown for one	Unknown — not stated by the source	Wi-Fi 5 (802.11ac), Wi-Fi 4 (802.11n)
Wi-Fi data rate (max)Known for one	Unknown — not stated by the source	1300 Mbit/s
Wi-Fi bandKnown for one	Unknown — not stated by the source	Dual-band (2.4 GHz / 5 GHz)
Securityidentical
Security algorithmsKnown for one	IPSEC, SSL/TLS	Unknown — not stated by the source
VPN supportKnown for one	IKEv2, IPSec, SSL, L2TP/IPSec	Unknown — not stated by the source
Management featuresidentical
URL filteringKnown for one	Yes	Unknown — not stated by the source
Ports & interfaces1 differ
USB 3.2 Gen 1 (3.1 Gen 1) Type-A ports quantityKnown for one	2	Unknown — not stated by the source
Ethernet LAN (RJ-45) portsDiffers	6	4
Ethernet LAN data ratesKnown for one	10,100,1000 Mbit/s	Unknown — not stated by the source
Number of console portsKnown for one	1	Unknown — not stated by the source
Ethernet DMZ ports quantity	4	4
SFP module slots quantity	1	1
Connectivity technologyKnown for one	Unknown — not stated by the source	Wired & Wireless
USB 2.0 ports quantityKnown for one	Unknown — not stated by the source	1
WAN connectionKnown for one	Unknown — not stated by the source	Ethernet (RJ-45)
Designidentical
Built-in fanKnown for one	No	Unknown — not stated by the source
Poweridentical
Input currentKnown for one	2.5 A	Unknown — not stated by the source
DC input voltageKnown for one	12 V	Unknown — not stated by the source
Power consumption (max)Known for one	13.3 W	Unknown — not stated by the source
Power consumption (typical)Known for one	Unknown — not stated by the source	18 W
Operational conditionsidentical
Operating temperature (T-T)	0 - 40 °C	0 - 40 °C
Storage temperature (T-T)	-30 - 70 °C	-30 - 70 °C
Operating relative humidity (H-H)	10 - 90%	10 - 90%
Storage relative humidity (H-H)	10 - 90%	10 - 90%
Weight & dimensions1 differ
WidthKnown for one	272 mm	Unknown — not stated by the source
DepthKnown for one	187 mm	Unknown — not stated by the source
HeightKnown for one	36 mm	Unknown — not stated by the source
WeightDiffers	1.4 kg	1.14 kg
Dimensions (WxDxH)Known for one	Unknown — not stated by the source	216 x 143 x 33 mm
Packaging dataidentical
Package widthKnown for one	427 mm	Unknown — not stated by the source
Package heightKnown for one	247 mm	Unknown — not stated by the source
Package depthKnown for one	73 mm	Unknown — not stated by the source
Other features2 differ
Firewall throughputDiffers	1800 Mbit/s	350 Mbit/s
VPN throughputDiffers	450 Mbit/s	90 Mbit/s
Packaging contentidentical
Cables includedKnown for one	Unknown — not stated by the source	LAN (RJ-45), RS-232

A dash means the value is not stated by the source. Unknown values are never counted for or against a product, and there is no overall score.

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