# Wireless USB Adapter Mercusys MW300UH

**URL:** https://aio.lv/en/product--mercusys-mw300uh--3494794
**Data updated:** 2025-12-29 10:57 (EET)
**Category:** Network Cards
**Manufacturer:** MERCUSYS
**Manufacturer code:** MW300UH
**EAN:** 6935364099602
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 7.49 €
**Prices and availability valid until:** 2026-07-15 23:59
**Price without VAT (21%):** 6.19 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--mercusys-mw300uh--3494794

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 01.07.2026 | free |
| Pickup points | 06.07.2026 | 1.99 EUR |
| Courier delivery to door | 06.07.2026 | 4.99 EUR |

## Summary description

The Mercusys MW300UH is a high-gain wireless USB adapter with a maximum data transfer rate of 300 Mbps. It supports Wi-Fi 4 (802.11n) on the 2.4 GHz band, providing reliable connectivity for your devices. With USB power, it is easy to set up and use, making it ideal for enhancing your wireless network performance.

## Long description

The Mercusys MW300UH is a wireless USB adapter that provides up to 300 Mbps on the 2.4 GHz band using IEEE 802.11n/g/b standards. Equipped with two external 5 dBi high-gain antennas and a desktop cable design, the MW300UH improves signal reception and lets you place the adapter closer to the router for more stable wireless connectivity. The adapter is USB-powered and compatible with Windows 10/8.1/8/7/XP.
Advantages
Two high-gain 5 dBi external antennas increase signal strength and range. The cable-mounted desktop design reduces signal blocking from the computer chassis and allows flexible placement for better reception. USB power eliminates the need for an external power source. Simple installation is supported via the included driver CD.
Suitable for
Desktop or laptop computers lacking built-in Wi‑Fi
Extending Wi‑Fi coverage in small apartments or home offices
Basic web browsing, email, and streaming on the 2.4 GHz band
Key specifications
Model: Mercusys MW300UH (MPN: MW300UH)
Maximum data transfer rate: 300 Mbit/s
Wireless standards: IEEE 802.11n/g/b (Wi‑Fi 4)
Frequency band: 2.4 GHz
Antennas: Two external 5 dBi high‑gain antennas
Interface: USB (WLAN host interface)
Colour: White
Compatibility: Windows 10/8.1/8/7/XP
How to use
Connect the MW300UH to an available USB port on your computer and position the adapter using the attached cable so the antennas face toward the router. Install the driver and setup utility from the supplied CD or download the latest driver from the manufacturer’s website if necessary. Use the setup utility to select your 2.4 GHz network and enter the Wi‑Fi password to complete the connection.
Usage recommendations
Place the adapter a short distance from the router and avoid placing it behind metal objects or inside closed computer cases. For best performance on congested networks, position the antennas vertically and keep firmware/drivers updated.

## Specifications

| Feature | Value |
|---|---|
| Wi-Fi standards | Wi-Fi 4 (802.11n), 802.11g, 802.11b |
| Component for | PC/Laptop |
| Harmonized System (HS) code | 85176990 |
| Sustainability certificates | RoHS |
| Antenna design | External |

### Ports & interfaces

| Feature | Value |
|---|---|
| Connectivity technology | Wired & Wireless |
| Interface | WLAN |
| Host interface | USB |
| Internal | No |
| USB version | 2.0 |

### Bandwidth

| Feature | Value |
|---|---|
| Maximum data transfer rate | 300 Mbit/s |

### Network

| Feature | Value |
|---|---|
| Networking standards | IEEE 802.11n, IEEE 802.11g, IEEE 802.11b |

### Wireless LAN features

| Feature | Value |
|---|---|
| Wi-Fi | Yes |
| Wi-Fi band | Single-band (2.4 GHz) |
| Top Wi-Fi standard | Wi-Fi 4 (802.11n) |
| WLAN data transfer rates supported | 54, 300, 11 |

### Antenna

| Feature | Value |
|---|---|
| Gain | 5 dBi |
| Antenna | Yes |
| Frequency range | 2.4 - 2.4835 |
| Antennas quantity | 2 |

### Performance

| Feature | Value |
|---|---|
| Security algorithms | WPA, WPA2-PSK, WPA2, WPA-PSK, WEP |
| Windows operating systems supported | Windows XP, Windows 8.1 x64, Windows 8.1, Windows 8 x64, Windows 8, Windows 7 x64, Windows 7, Windows 10, Windows 10 x64 |

### Design

| Feature | Value |
|---|---|
| Product colour | White |

### Weight & dimensions

| Feature | Value |
|---|---|
| Package weight | 220 g |
| Height | 201.1 mm |
| Width | 113.2 mm |
| Depth | 100.5 mm |
| Package depth | 134.5 mm |
| Package height | 41.5 mm |
| Package width | 282.5 mm |

### Power

| Feature | Value |
|---|---|
| USB powered | Yes |

### Operational conditions

| Feature | Value |
|---|---|
| Operating relative humidity (H-H) | 10 - 90 |
| Storage temperature (T-T) | -40 - 70 |
| Operating temperature (T-T) | 0 - 40 |
| Storage relative humidity (H-H) | 5 - 90 |

### Certificates

| Feature | Value |
|---|---|
| Certification | CE |

### Packaging content

| Feature | Value |
|---|---|
| Cables included | USB |

## FAQ

### How much does the Wireless USB Adapter MW300UH cost, and is it available for purchase?

The price is 7.49 € (valid at the time of publication and already includes all taxes). The item is available for order — 49 pcs. are in stock, and you can place your purchase right now with delivery across Latvia and Europe or choose pickup at the Riga collection point. We offer favorable purchase terms, including the option to split the payment into convenient monthly installments. Availability and price are updated in real time, so we recommend placing your order in advance.

### If I order this product today, when will I receive my order?

If you place your order today, delivery will be as fast and convenient as possible. You will be able to pick up your order on 01.07.2026 at the Riga pickup point or choose delivery across Latvia and Europe. We carefully inspect every purchase and pack it securely for safe transportation.

### What payment options are available?

AiO.lv offers several payment methods: Bank transfer, Bank cards on-line, Apple Pay, Google Pay. All transactions are 100% secure and encrypted.

### Can this product be purchased for a company (with VAT)?

Yes. AiO.lv works with legal entities in Latvia and across Europe. The product price already includes VAT. For certain product categories, as well as for companies from other EU countries with a valid VAT number, a 0% VAT rate may apply. We issue the invoice immediately after the order is placed, support electronic BIS invoices, and automatically generate all necessary accounting documents. You can complete the purchase for a company online — simply select the company profile and choose bank transfer as the payment method during checkout.

### What is the warranty period?

All MERCUSYS products come with an official 2 Years warranty. It covers all manufacturing defects and malfunctions that may occur during use. The warranty is valid at all authorized MERCUSYS service centers and through AiO.lv

### Can the product be returned after purchase?

Yes, you can return the product within 14 days of purchase if you bought it as a consumer (not a legal entity). Returns are possible without giving any reason — the main condition is that the product retains its original appearance and full set of accessories. We will make the process as simple and convenient as possible: just contact our customer support team, and we will help you arrange the return.

### Where should I contact for warranty service?

For warranty-related questions you can contact the AiO.lv (SIA VSPRO) customer support team. More information about warranty service: https://aio.lv/en/warranty

### How can I tell if this product suits my needs?

When making a choice, we recommend paying attention to the key features: connectivity technology, interface, host interface, maximum data transfer rate, networking standards, product colour, compatibility with your devices or usage conditions, material quality, functionality, and warranty terms. These characteristics will help you determine how well the model meets your needs.

### Where can I download the instructions for Wireless USB Adapter MW300UH?

You can download the instructions in PDF format from the “Instructions” section on the product description page. The file contains complete information about installation, setup, and usage.

## Image

https://aio.lv/img/cache/product/3494794/54734379_large.webp