Can this device take wifi input (not ethernet / cat 6) and convert it to a ethernet output (cat 6)?

Yes, you could setup like this: WiFi--->GL-AR300M16-Ext---(ethernet cable)--->Your devices

Can I change one antenna to a directional antenna and use in repeater mode?

You could change the antenna, the antenna is uFL to RP-SMA-Male.

If I connect an external antenna do I have to have something connected to both antenna ports and if so do they have to match or can I leave one empty?

Coverage will likely be better with two similar antennas connected. One antenna connected would not, most likely, cause any circuit failures. GL.iNet has indicated to me that dissimilar antennas is acceptable. In my case I tried a WiFi yagi on one antenna port (supplied antenna on the other) but it did not improve signal strength to my internet source in my particular situation. I would suggest you give it a try and see if it works for you.

Gl Ar300m16 Ext | Desertcart Italy

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Description

🌍 Stay connected, secure, and unstoppable—anywhere you roam!

DUAL ETHERNET PORTS - Flexible wired connections for stable, high-speed networking anywhere.
UNIVERSAL USB POWER - Powered by any USB source—laptop, power bank, or adapter—for ultimate on-the-go freedom.
BUILT IN VPN SECURITY - Pre-installed OpenVPN & Wireguard keep your public Wi-Fi sessions private and secure.
OPEN WRT PROGRAMMABILITY - Fully open-source OS lets you customize and extend functionality endlessly.
POCKET SIZED POWERHOUSE - Ultra-lightweight 39g design fits in your palm or pocket for seamless travel.

The GL.iNet GL-AR300M16-Ext is a compact, travel-friendly mini router featuring dual Ethernet ports, 300 Mbps Wi-Fi 4 connectivity, and pre-installed OpenVPN/Wireguard VPN for secure browsing on public networks. Powered via USB and running the open-source OpenWrt OS, it offers extensive customization, making it the perfect portable networking companion for professionals on the move.

Specifications

ASIN	B07794JRC5
Antenna Location	Bussiness, Monitoring, Security, Travel
Antenna Type	Fixed
Best Sellers Rank	#11,720 in Electronics ( See Top 100 in Electronics ) #84 in Computer Routers
Brand	GL.iNet
Built-In Media	GL-AR300M16-Ext mini router, USB cable, Ethernet cable, and user manual
Color	Black
Compatible Devices	Laptop
Connectivity Protocol	Ethernet, Wi-Fi
Connectivity Technology	Ethernet, USB, Wi-Fi
Control Method	App
Controller Type	USB Control
Coverage	Standard Router Range (Indoors: 100-150 feet)
Customer Reviews	4.3 out of 5 stars 2,081 Reviews
Data Transfer Rate	300 Megabits Per Second
Frequency	2.4 GHz
Frequency Band Class	Single-Band
Has Internet Connectivity	Yes
Has Security Updates	Yes
Is Modem Compatible	Yes
Item Dimensions L x W x H	2.28"L x 2.28"W x 0.98"H
LAN Port Bandwidth	10/100 megabits per second
Manufacturer	GL Technologies
Maximum Upstream Data Transfer Rate	150 Megabits Per Second
Mfr Part Number	GL-AR300M16-Ext
Model Name	Shadow
Model Number	GL-AR300M16-Ext
Number of Antennas	2
Number of Ports	3
Operating System	OpenWrt
Other Special Features of the Product	Access Point Mode, Internet Security, Remote Access
RAM Memory Installed	128 MB
Router Network Type	Wired and Wireless
Security Protocol	WPA2
Smart Home Compatibility	Smart Home Compatible
Special Feature	Access Point Mode, Internet Security, Remote Access
Unit Count	1 Count
Voltage	5 Volts
Warranty Description	2 Years
Wi-Fi Generation	Wi-Fi 4
Wireless Communication Standard	2.4 GHz Radio Frequency
Wireless Compability	2.4 GHz Radio Frequency

Reviews

D**1

14.11.2025

A**R

7.08.2025

C**K

27.05.2022

D**.

18.03.2026

P**N

11.06.2019

N**R

26.02.2023

R**R

16.04.2026

V**V

9.02.2026

P**N

12.06.2025

G**E

20.12.2025

M**N

7.06.2024

R**.

20.02.2024

W**U

2.05.2025

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GL-AR300M16-EXT

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