What ports are available on the Ubiquiti ER-4?

It features three 10/100/1000 RJ45 Ethernet ports, one 1 Gbps SFP port for fiber, and one RJ45 serial management port. Four Ethernet ports are available by default (eth0), supporting flexible LAN/WAN configurations in Gigabit networks.

Is the EdgeRouter 4 fanless and rack-mountable?

Yes, it's a fanless router for silent operation and is rack-mountable. Compact dimensions of 229 x 136.5 x 31.1 mm and 795 g weight fit standard 1U racks, ideal for office or data center deployments without additional cooling.

What are the environmental operating conditions?

Operates from -10 to 50° C (14 to 122° F) and 10-90% noncondensing humidity. Internal AC/DC adapter supports 100-240V AC with max 13W consumption, ensuring reliability in diverse environments like warehouses or remote sites.

What storage does the ER-4 have?

Includes 4 GB eMMC and 8 MB SPI NOR on-board flash storage, paired with 1 GB DDR3 RAM. This configuration supports EdgeOS firmware, logs, and configurations for stable, long-term operation in enterprise routing scenarios.

What compliance certifications does it hold?

Certified to CE, FCC, and IC standards. These ensure electromagnetic compatibility and safety for deployment in regulated enterprise networks across North America and Europe.

ER-4 - Ubiquiti ER-4 4-Core 1GHz 1GB RAM 3xGbE SFP Fanless Router

Name: Ubiquiti ER-4 4-Core 1GHz 1GB RAM 3xGbE SFP Fanless Router
Brand: Ubiquiti
SKU: ER-4

ER-4 - Ubiquiti ER-4 4-Core 1GHz 1GB RAM 3xGbE SFP Fanless Router | US IT Hardware

Product overview

The Ubiquiti EdgeRouter 4 (ER-4) is a fanless enterprise-grade wired router designed for high-performance networking. It features a 4-core 1 GHz MIPS64 processor and 1 GB DDR3 RAM, enabling routing up to 3.4 million packets per second for 64-byte packets and 4 Gbps line rate for packets 128 bytes or larger. Connectivity includes three 10/100/1000 RJ45 Ethernet ports, one 1 Gbps SFP port for fiber links, and one RJ45 serial management port. With 4 GB eMMC and 8 MB SPI NOR flash storage, it supports robust software operations. The compact, rack-mountable design measures 229 x 136.5 x 31.1 mm and weighs 795 g, operating from -10 to 50°C and 10-90% noncondensing humidity. Powered by an internal AC/DC adapter with max 13W consumption, it meets CE, FCC, IC standards. Ideal for branch offices, SMBs needing reliable Gigabit routing with SFP flexibility.

4-Core 1 GHz MIPS64, 3.4M pps routing
1 GB DDR3 RAM, 4 GB eMMC storage
3x Gigabit RJ45 + 1x 1 Gbps SFP ports
Fanless, rack-mountable design
-10 to 50°C operation, 13W max power
CE, FCC, IC certified compliance

Expedited and overnight shipping options are available at checkout, priced by destination and service.
Purchase orders accepted from qualified institutions.
Refunds within 14 days and replacements within 30 days of delivery with an RMA (25% restocking fee on customer-initiated returns), and every part carries our Standard 30-Day Warranty - see our return policy or contact US IT Hardware.

Featuring

Manufacturer part #	ER-4
Brand	Ubiquiti
Condition	New
Model	ER-4
Product Line	EdgeRouter
Product Type	Fanless Router
On-Board Flash Storage	4 GB eMMC, 8 MB SPI NOR

Memory

System Memory	1 GB DDR3 RAM

Power Consumption

Compatible systems

No specific compatibility lists found in sources

Best for

Branch Office Routing
Handles 3.4 million pps for 64-byte packets with 4 Gbps line rate, supporting multiple users via 3 Gigabit RJ45 ports.
SMB Gateway
Fanless design with 4-core 1 GHz processor and 1 GB RAM ensures silent, reliable operation in small business environments.
Fiber Connectivity
1 Gbps SFP port enables high-speed fiber uplinks, ideal for integrating with existing fiber infrastructure.
Rack-Mount Deployments
Rack-mountable form factor fits standard 1U spaces, with operating range -10 to 50°C for data closets.

Network Ports	(1) 1 Gbps SFP Port
Ethernet Ports	(3) 10/100/1000 RJ45 Ports; (1) RJ45 Serial Port; (4) Ethernet Ports (Default eth0)

Weight	795 g (1.75 lb)
Dimensions	229 x 136.5 x 31.1 mm (9.02 x 5.37 x 1.22 in)

Operating Humidity	10 - 90% Noncondensing
Operating Temperature	-10 to 50° C (14 to 122° F)

Ubiquiti ER-4 4-Core 1GHz 1GB RAM 3xGbE SFP Fanless Router

Product overview

Featuring

Memory

Power Consumption

Compatible systems

Best for

Frequently asked questions

Details

Shipping, warranty & returns

Customer reviews

Physical Characteristics

Interface/Ports

Media & Performance

Processor & Chipset

Weight & Dimensions

Compliance Standards

Environmental Condition