N300 Wireless Mini USB Adapter

  • Provides fast 300Mbps Wi-Fi connections for wired devices
  • Plug and Play without CD
  • Ideal for online gaming, HD streaming, web browsing, and more
  • Supports Windows 11/10/8.1/8/7/XP (32/64bit)
  • How to set up Mercusys Wireless Adapter-MW300UM

Get Connected, Get Fast.

N300 Wireless Mini USB Adapter


Plug and Play
Without CD

Stable 300 Mbps Wi-Fi1

Windows 11

Enhanced WPA3

Plug and Play,
No More Configuration

With the built-in inbox driver by Windows 11/10 operation systems, you just need to plug the MW300UM into the computer and then enjoy the fast wireless network in seconds.

Diverse Functions for Most Needs

The MW300UM Wireless Mini USB Adapter allows you to connect a PC or laptop to a wireless network of up to 300Mbps speeds. Moreover, with its soft AP function, it could turn your PC or laptop into a Wi-Fi hotspot if you are using an existing wired connection. That would satisfied your most surfing needs.


Portable Design for More Convenience

The MW300UM could be inserted into any USB port, which adapts to any applying scenarios. Besides, it takes the advantage of portable design, making it quite convenient to take on the road.

Compatible with Windows Operating System

Supports Windows 11/10/8.1/8/7/XP (32/64bit)

1 Maximum wireless signal rates are the physical rates derived from IEEE Standard 802.11 specifications. Actual wireless data throughput and wireless coverage, and number of connected devices are not guaranteed and will vary as a result of network conditions, AP limitations, and environmental factors, including building materials, obstacles, volume and density of traffic, and AP location.
2 Use of WPA3 requires APs to also support the corresponding feature. To use WPA3, you may need to upgrade the drivers which can be downloaded on the official website of MERCUSYS.
*To ensure compatibility, you may need to update the adapter’s drivers after an OS update. You can find our latest drivers in the download center at http://www.mercusys.com/en/support.

Wireless Standards
IEEE 802.11n, IEEE 802.11g, IEEE 802.11b
2.400 - 2.4835GHz
WiFi Speeds

11n: Up to 300Mbps(Dynamic)

11g: Up to 54Mbps(Dynamic)

11b: Up to 11Mbps(Dynamic)
Reception Sensitivity

270M: -62dBm@10% PER

130M: -65dBm@10% PER

108M: -68dBm@10% PER

54M: -68dBm@10% PER

11M: -85dBm@8% PER

6M: -88dBm@10% PER

1M: -90dBm@8% PER
Transmission Power
Wireless Security



40.4 × 17.2 × 8.6 mm

(1.6 × 0.7 × 0.3 in)

USB 2.0
Antenna Type
Package Contents

N300 Wireless Mini USB Adapter (MW300UM)

Quick installation guide


Operating temperature: 0⁰C ~ 40⁰C (32⁰F ~ 104⁰F)

Storage temperature: -40⁰C ~ 70⁰C (-40⁰F ~ 158⁰F)

Operating humidity: 10% ~ 90% Non-Condensing

Storage humidity: 5% ~ 90% Non-Condensing
System Requirements

Windows 11/10/8.1/8/7/XP