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Oliver Camden
5
Powerful router with hardware acceleration. Handles heavy traffic smoothly.
ER-4
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UBNT Gigabit Ethernet Enterprise Router,PoE, Hardware accele...
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ER-4
- Description:
- UBNT Gigabit Ethernet Enterprise Router,PoE, Hardware acceleration
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- Brand:
- Ubiquiti
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ER-4 Overview
ER-4 is a high-performance modular enterprise router designed for scalable network architectures. It features a modular design with integrated services such as voice, video, and WAN optimization, powered by a redundant AC power source that ensures continuous operation and robust performance.
Built with dual WAN interfaces and eight LAN ports, ER-4 supports advanced VPN features including IPSec, SSL VPN, GRE, DMVPN, and FlexVPN while delivering up to 5 Gbps throughput. Its support for key routing protocols, IPv6 compatibility, stacking capability, and built-in security features make it an ideal solution for enterprise environments requiring high availability and modular expandability.
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ER-4 Specifications
- Form Factor
- Rack-mount
- Ethernet Technology
- 10/100/1000
- Width
- 17.5 inches
- Memory
- 4 GB
- Depth
- 15 inches
- Weight
- 15 lbs
- Flash Memory
- 512 MB
- Product Type
- Enterprise Router
- WAN Configuration
- Dual WAN
- WAN Ports
- 2 WAN
- Wi-Fi Standard
- N/A
- Connectivity Type
- Wired
- Wireless Support
- No
- Firewall Features
- Yes
- Management
- Managed
- QoS Features
- Supported
- 5G Support
- No
- Device Type
- Router
- Network Protocols
- IPv4, IPv6
- Remote Management
- SSH, Telnet, SNMP
- Integrated Services
- Voice, Video, WAN Optimization
- High Availability Support
- Supported
- Use Case
- Enterprise
- Telecom
- TIA/EIA-568
- Built-in Security Features
- Firewall, Intrusion Prevention, Malware Protection
- Power Source
- AC Power Supply / Redundant
- Architecture
- Modular
- Speed/Capacity
- Gigabit
- Modular Slots Available
- 3+ Slots
- VPN Support
- IPSec / SSL VPN / GRE / DMVPN / FlexVPN
- Interface Ports
- RJ-45, SFP
- Broadband
- Fiber Optic / DSL
- Stacking Capability
- Yes
- Routing Protocols
- OSPF / BGP / EIGRP / MPLS / Static Routing
- Throughput Capacity
- 5 Gbps
- Power
- 350 Watt
- LAN Ports
- 8 LAN Ports
- Expansion Slots
- NIM, SFP+
- Height
- 2.2 inches
- Features
- VPN, IPv6 Compatible, Firewall, MPLS, Syslog
- Compliance Standards
- IEEE 802.3, IEEE 802.1Q, NIST SP 800-53
- Safety
- UL Listed, CE Certified
- EMC
- FCC Part 15, CE Marked
- Product Name
- ER-4 Enterprise Router
Quality Certifications
To get the detailed certification, please go to the Compliance Center.
Product Comparison Table 
| ER-4 |  ER-12 |  UDM |  ER-6P |  UBNT USG | |
|---|---|---|---|---|---|
| 5G Support | No | No | No | No | No |
| Architecture | Modular | Modular | Integrated | Modular | Fixed |
| Broadband | Fiber Optic / DSL | Fiber Optic / DSL / LTE | N/A | Fiber Optic / DSL / LTE | N/A |
| Built-in Security Features | Firewall, Intrusion Prevention, Malware Protection | Firewall / Intrusion Prevention | Firewall / Intrusion Prevention | Firewall, Intrusion Prevention, Malware Protection | Firewall |
| Compliance Standards | IEEE 802.3, IEEE 802.1Q, NIST SP 800-53 | FCC / CE / RoHS | FCC, CE | FCC, CE, RoHS | CE, FCC |
| Connectivity Type | Wired | Wired / Ethernet | Wired / Wireless | Wired | Wired |
| Depth | 15 inches | 15 inches | 9.29 inches | 15 inches | 5.9 inches |
| Device Type | Router | Router | Router | Router | Router |
| EMC | FCC Part 15, CE Marked | EN 55032 / FCC Part 15 | N/A | N/A | N/A |
| Ethernet Technology | 10/100/1000 | 10/100/1000 | 10/100/1000 | 10/100/1000 | 10/100/1000 |
| Expansion Slots | NIM, SFP+ | NIM / SFP+ | N/A | NIM, SFP+ | N/A |
| Features | VPN, IPv6 Compatible, Firewall, MPLS, Syslog | VPN / IPv6 Compatible / Firewall / MPLS | Mesh, VPN, IPv6 Compatible, Firewall | VPN, Firewall, IPv6 Compatible, Redundancy | VPN, Firewall, IPv6 Compatible |
| Firewall Features | Yes | Yes | Yes | Yes | Yes |
| Flash Memory | 512 MB | 512 MB | 16 GB | 256 MB | 256 MB |
| Form Factor | Rack-mount | Rack-mount | Desktop | Rack-mount | Desktop |
| Height | 2.2 inches | 1.75 inches | 4.33 inches | 2.0 inches | 1.0 inches |
| High Availability Support | Supported | Supported | Not Supported | Supported | Not Supported |
| Integrated Services | Voice, Video, WAN Optimization | Voice / Video / WAN Optimization | N/A | Voice, Video, WAN Optimization | N/A |
| Interface Ports | RJ-45, SFP | RJ-45 / SFP | RJ-45 | RJ-45, SFP+ | RJ-45 |
| LAN Ports | 8 LAN Ports | 8 LAN Ports | 4 LAN Ports | 4 LAN Ports | 2 LAN Ports |
| Management | Managed | Managed | Managed | Managed | Managed |
| Memory | 4 GB | 2 GB | 2 GB | 4 GB | 512 MB |
| Modular Slots Available | 3+ Slots | 2 Slots | N/A | 3+ Slots | N/A |
| Network Protocols | IPv4, IPv6 | IPv4 / IPv6 | TCP/IP, ICMP, UDP, SNMP | IPv4, IPv6 | IPv4, IPv6 |
| Power | 350 Watt | 350W | 29.5W | 60 Watt | 7 W |
| Power Source | AC Power Supply / Redundant | AC Power Supply with Redundant Option | AC Power Supply, Redundant | AC Power Supply / Redundant | AC Power Supply |
| Product Name | ER-4 Enterprise Router | ER-12 Enterprise Router | UniFi Dream Machine | ER-6P Enterprise Router | UniFi Security Gateway |
| Product Type | Enterprise Router | Enterprise Router | Integrated Gateway | Enterprise Router | Enterprise Router |
| QoS Features | Supported | Supported | Supported | Supported | Supported |
| Remote Management | SSH, Telnet, SNMP | SSH / Telnet / SNMP / HTTPS | UniFi Controller, SSH | SSH, HTTPS, SNMP | SSH, HTTPS, SNMP |
| Routing Protocols | OSPF / BGP / EIGRP / MPLS / Static Routing | OSPF / BGP / EIGRP / Static Routing | OSPF / RIP / Static Routing | OSPF / BGP / EIGRP / Static Routing | Static Routing |
| Safety | UL Listed, CE Certified | IEC 60950 / UL61010 | N/A | N/A | N/A |
| Speed/Capacity | Gigabit | Gigabit | Gigabit | Gigabit | Gigabit |
| Stacking Capability | Yes | Yes | No | Yes | No |
| Telecom | TIA/EIA-568 | TIA/EIA-568 | N/A | N/A | N/A |
| Throughput Capacity | 5 Gbps | 1 Gbps | 3.5 Gbps | 2 Gbps | 1 Gbps |
| Use Case | Enterprise | Enterprise | Small Business / Home Office | Enterprise | Small Business |
| VPN Support | IPSec / SSL VPN / GRE / DMVPN / FlexVPN | IPSec / SSL VPN / DMVPN | IPSec | IPSec / SSL VPN | IPSec / L2TP / PPTP |
| WAN Configuration | Dual WAN | Dual WAN | WAN | Dual WAN | WAN |
| WAN Ports | 2 WAN | 2 WAN | 1 WAN | 2 WAN | 1 WAN |
| Weight | 15 lbs | 25 lbs | 4.85 lbs | 8 lbs | 1.1 lbs |
| Wi-Fi Standard | N/A | WiFi 6 | WiFi 5 | N/A | N/A |
| Width | 17.5 inches | 17.5 inches | 8.27 inches | 17 inches | 7.87 inches |
| Wireless Support | No | No | Yes | No | No |
Reviews & Ratings
S
Saira Mahmood
5
Consistent routing performance and reliable uptime.
M
Mikko Lahtinen
5
Good choice for demanding edge routing. Stable and fast.
Z
Zeeshan Ali
5
Performs well under load. Configuration is flexible.
N
Natalie Brooks
5
Enterprise capable router in a compact form.
Questions & Answers
What is the UBNT ER-4 Gigabit Ethernet Enterprise Router?
The ER-4 is a high-performance enterprise router featuring gigabit Ethernet, PoE pass-through and hardware-accelerated packet processing for reliable network delivery.
What is the maximum routing throughput of the ER-4?
The ER-4 delivers up to 3 Gbps of routing throughput with hardware-accelerated NAT, firewall and DPI offload for sustained performance under load.
How many Ethernet ports does the ER-4 provide?
The ER-4 offers three Gigabit RJ-45 ports and one Gigabit SFP port for flexible copper or fiber connectivity.
Does the ER-4 support PoE and what is the power budget?
Yes, the ER-4 supports 24 V passive PoE output on two Ethernet ports with a combined power budget of up to 24 W to power downstream devices.
What hardware acceleration features are included in the ER-4?
The ER-4 leverages a dedicated hardware acceleration engine to offload NAT, firewall and deep packet inspection tasks for low-latency performance.
Can the ER-4 handle advanced VLAN and QoS configurations?
Yes, the ER-4 supports 802.1Q VLAN tagging, DSCP traffic classification and stateful QoS policies to prioritize critical applications.
Which VPN protocols does the ER-4 support and what is the performance?
The ER-4 supports IPsec, OpenVPN and L2TP VPN protocols with hardware acceleration delivering up to 1.5 Gbps of encrypted throughput.
How is the ER-4 configured and managed?
You can configure the ER-4 via the intuitive EdgeOS web interface, CLI or UISP (formerly UNMS) for centralized control and one-click provisioning.
What security features are built into the ER-4?
The ER-4 includes a stateful firewall, intrusion detection signatures, deep packet inspection and user-defined traffic policies to secure your network.
What management interfaces does the ER-4 provide?
The ER-4 offers a web-based GUI, full-featured CLI, SNMP v2c/v3 and RESTful API integration for flexible network management.
Is the ER-4 suitable for rack mounting?
The ER-4 ships in a compact desktop form factor with an optional rack-mount kit available for 1U installations.
What is the typical power consumption of the ER-4?
The ER-4 consumes approximately 8 W during normal operation and up to 32 W when supplying PoE across both ports.
Which Ubiquiti products are compatible with the ER-4?
The ER-4 integrates seamlessly with Ubiquiti UniFi and UISP ecosystems, including switches, access points and network management software.
What are common use cases for the ER-4 router?
The ER-4 is ideal for small to medium-sized enterprises, branch offices, PoE-powered access deployments and multi-WAN failover scenarios.
How do I update the firmware on the ER-4?
Firmware on the ER-4 can be updated via the EdgeOS web UI or UISP Controller with one-click installation and automatic rollback support.
What warranty and support options are available for the ER-4?
The ER-4 includes a one-year limited hardware warranty, with optional extended support plans and access to Ubiquiti’s online knowledge base.