The Ubiquiti EdgeRouter 4 Port (ER-4) offers four gigabit ports, including one SFP port for fibre uplink. With a maximum routing speed of 3.4 million packets per second, this compact and fanless device is ideal for small office and home office (SOHO) settings. For rack mounting, the ER-4 can be used with the ER-RMKIT (sold separately) but does not have Power over Ethernet (PoE) capabilities. Simply connect the device to the main power source using an IEC cable.
Tech Specs
Click here for the Ubiquiti EdgeRouter 4 Port datasheet.
| Device Specifications — Mechanical / Physical | |
|---|---|
| Dimensions | 229 x 136.5 x 31.1 mm (9 x 5.4 x 1.2") |
| Weight | 795 g (1.8 lb) |
| Device Specifications — Hardware | |
| Processor | 4-core 1 GHz MIPS64 |
| System Memory | 1 GB DDR3 RAM |
| On-board Flash Storage | 4 GB eMMC, 8 MB SPI NOR |
| Networking Interface | (3) 10/100/1000 RJ45 ports (1) 1 Gbps SFP port |
| Management Interface | (1) RJ45 serial port (4) Ethernet ports |
| Power Method | Universal AC power cord (C13), 30W, DC, 50/60 Hz |
| Power Supply | Internal AC/DC power adapter |
| Supported Voltage Range | 100-240V AC |
| Max. Power Consumption | 13W |
| ESD/EMP Protection | Air: ±24 kV, contact: ±24 kV |
| Button | Factory reset |
| LEDs | Data ports: speed/link/activity SFP data port: link/activity |
| Operating Temperature | -10 to 50° C (14 to 122° F) |
| Operating Humidity | 10 to 90% noncondensing |
| Certifications | CE, FCC, IC |
| NDAA Compliant | Yes |
FAQs
Q1: What is the Ubiquiti ER‑4 used for?
A: The ER‑4 is a high‑performance wired router — suitable for home, small‑business, or enterprise networks — handling routing, firewalling, VLANs, and complex network setups with Gigabit and fibre connectivity.
Q2: What hardware and port configuration does the ER‑4 have?
A: It features a quad‑core 1.0 GHz MIPS64 CPU, 1 GB DDR3 RAM, 4 GB onboard storage, and includes 3× Gigabit RJ45 ports plus 1× 1‑Gbps SFP port for fibre or high‑speed uplinks.
Q3: What network throughput and performance can I expect?
A: The ER‑4 can forward up to 3.4 million packets per second for small packets and delivers up to 4 Gbps for standard-sized traffic — enough for full‑gigabit, dual‑Gigabit, or multiple VLAN/wireguard/VPN scenarios.
Q4: What are the power, size, and environmental specifications?
A: The router is fan‑less, draws up to 13 W, is powered via standard AC 100–240 V, and measures 229 × 136.5 × 31.1 mm, weighting ~795 g. It’s rated for –10 °C to +50 °C ambient temperature and 10–90% non‑condensing humidity.
Q5: What networking capabilities and features does the ER‑4 support?
A: It supports a full suite: static routing, OSPF, BGP, VLANs, firewall rules, VPNs (IPSec/OpenVPN/L2TP), NAT, QoS, VLAN and bridging — making it very flexible for complex LAN/WAN environments, multi‑site routing or advanced home setups.