Precise Protection. Flexible Subscription.
Introducing the latest USG Series-USG FLEX, delivering higher levels of performance and flexibility! USG FLEX's platform continue its tradition in providing the latest, leading technologies, all while providing a complete suite of security subscription with seamless, scalable gateway connectivity. We want to bring top of the line experience for all business owners!

Higher Precision Detection Uncovers Threats
Zyxel Security Cloud keeps learning from collecting threat information. USG FLEX series supports advanced Anti-Malware with cloud query express mode which expands billions of signatures. The cloud query with high detection rate helps verify the file hash within seconds.

Best Threat
Intelligence Alliance
To ensure your network on getting the best protection, USG FLEX integrates threat intelligence from leading companies and organizations in the cybersecurity field for scaled information about file and real-time threat data. By leveraging a wider malware coverage with multiple-sourced database, this increases the accuracy in threat detection. Web Filtering is also included to safeguard all internet access, especially with CTIRU (Counter-Terrorism Internet Referral Unit) to restrict access to terrorist materials online.

High Assurance
Multi-layered Protection
USG FLEX is designed with multi-layer protection against multiple types of threats from in and out. URL Threat Filter, Anti-Malware, and Intrusion Prevention block external attacks, while Application Patrol and Web Filtering empower you to restrict users' inappropriate application usage or web access, all together safeguarding your network without any unattended gaps.

Flexible
Subscription
for Your Need
USG FLEX security services turn your firewall into a comprehensive security solution. Add Unified Threat Management (UTM) and Hospitality bundled service to get the protection and connectivity that meet your network needs. You can also choose from a single license whenever you need, such as Web Filtering, Anti-Malware, SecuReporter Premium, and more.

Upgrade to Gain
Migrate without Pain
If you still get USG series licenses, now is the time to migrate! USG FLEX provides hassle-free license migration from USG series with auto migration. Upgrade to a whole new 6-in-1 UTM bundle license from your USG existing licenses for more comprehensive protection.

Ports & interfaces
USB 3.2 Gen 1 (3.1 Gen 1) Type-A ports quantity	2
Ethernet LAN (RJ-45) ports	7
Number of console ports	1
SFP module slots quantity	1
Weight & dimensions
Width	300 mm
Depth	188 mm
Height	44 mm
Weight	1.65 kg
Power
Input current	4.17 A
Power consumption (max)	24.1 W
Operational conditions
Operating temperature (T-T)	0 - 40 °C
Storage temperature (T-T)	-30 - 70 °C
Operating relative humidity (H-H)	10 - 90%
Storage relative humidity (H-H)	10 - 90%
Network
Number of VPN connections	500
Concurrent SSL/VPN connections (maximum)	150
VPN tunnels quantity	300
Number of VLANs	64
Data transmission
Firewall throughput	2300 Mbit/s
VPN throughput	810 Mbit/s
Packaging data
Package width	351 mm
Package height	152 mm
Package depth	245 mm
Package weight	2.83 kg
Security
Security algorithms	IPSEC, SSL/TLS
VPN support	IKEv2, IPSec, SSL, L2TP/IPSec
Management features
URL filtering	Yes
Packaging content
Rack mount kit	Yes
Design
Rack mounting	Yes
Form factor	1U
Built-in fan	Yes
Performance
Heat dissipation	82.23 BTU/h
Noise level	41.5 dB
Mean time between failures (MTBF)	529688 h
Certification	DCC, CE, C-Tick, LVD
Logistics data
Harmonized System (HS) code	85176990