TP-Link TL-WN821N 300Mbps Wireless N USB Adapter
SKU: TL-WN821NNetworking › Routers & Access Points
Please enquire before ordering
The distributor has not yet confirmed the latest price and availability (last checked Jun 15, 2026)
092-251-4017Awaiting stock confirmationManufacturer's warranty
GenuineFree delivery from ฿5,000Tax invoice
300Mbps wireless USB adapter supporting 802.11n/g/b standards for stable Wi-Fi network connection between desktop computer or notebook, with WPS button for quick security setup
Key features
- Maximum wireless speed of 300Mbps supporting 802.11n/g/b
- 2T2R MIMO technology enhances signal strength and stability
- WPS button enables network security setup in just 1 second
- Supports Windows, macOS, and Linux without requiring additional driver installation
- Compact size 2.7 x 0.8 x 0.4 inches (69 x 21 x 9.5 mm)
Product description
TP-Link TL-WN821N is a wireless USB adapter designed to enhance Wi-Fi connectivity for desktop computers or notebooks lacking built-in wireless ports. It supports the 802.11n standard with a maximum speed of 300Mbps, sufficient for smooth streaming of HD video or online gaming. Featuring 2T2R MIMO technology, it strengthens signal coverage, extends range, and reduces signal dropouts at long distances. The adapter includes a WPS button for setting up network security in just seconds. Compatible with Windows 11/10/8.1/8/7, macOS 10.7–10.10, and Linux, it works plug-and-play on most operating systems without requiring additional driver installation.
More features
- On-Board Antenna reduces damage
- Supports Ad-Hoc and Infrastructure modes
- High signal sensitivity receives signals even in weak signal areas
- Operates reliably in environments from 0–40°C
- Supports WPA/WPA2-PSK encryption security
Pros and limitations
Pros
- Maximum wireless speed of 300Mbps supports HD Video and online gaming
- 2T2R MIMO technology enhances signal coverage and reduces interference.
- WPS button enables secure setup within seconds.
- Compact size and easy installation require minimal space.
- Supports multiple operating systems and works immediately on Windows, macOS, and Linux.
Limitations
- Not supported for Wi-Fi 5 (802.11ac) or Wi-Fi 6.
- No Ethernet port or SD card slot.
- This product is in End of Life status and may face future driver support issues.
Who it is for
Ideal for users who need to add Wi-Fi connectivity to desktop computers or notebooks without a wireless port, especially in environments requiring stable and strong signal coverage.
Connectivity
USB 2.0
Specifications (26)
- Button
- WPS Push Button
- Antenna
- On-Board
- Warranty
- End of Life
- Frequency
- 2.400-2.4835GHz
- Interface
- USB 2.0
- Port Type
- USB 2.0
- Dimensions
- 69 x 21 x 9.5 mm
- Form Factor
- USB dongle
- Signal Rate
- 11n: Up to 300Mbps (dynamic), 11g: Up to 54Mbps (dynamic), 11b: Up to 11Mbps (dynamic)
- Certification
- FCC, RoHS
- Compatibility
- Desktop and notebook computers
- Frequency Band
- 2.4GHz
- Wireless Modes
- Ad-Hoc / Infrastructure mode
- MIMO Technology
- 2T2R
- Package Content
- Wireless Adapter, One USB extension cable, Resource CD, Quick Installation Guide
- Storage Humidity
- 5% ~ 90% non-condensing
- Power Consumption
- Low power consumption (typical)
- Wireless Security
- Support 64/128 bit WEP, WPA-PSK/WPA2-PSK
- Operating Humidity
- 10% ~ 90% non-condensing
- Transmission Power
- <20dBm (EIRP)
- Wireless Standards
- IEEE 802.11n, IEEE 802.11g, IEEE 802.11b
- Storage Temperature
- -40℃ ~ 70℃ (-40℉ ~ 158℉)
- System Requirements
- Windows 11/10/8.1/8/7, macOS, Linux
- Modulation Technology
- DBPSK, DQPSK, CCK, OFDM, 16-QAM, 64-QAM
- Operating Temperature
- 0℃ ~ 40℃ (32℉ ~ 104℉)
- 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
Compatibility
Windows, macOS, Linux
Datasheets and manuals straight from the manufacturer — select a document to open or download it.
13 questions
Frequently asked questions about this product
Compiled from manufacturer information
Does TL-WN821N support Wi-Fi 6?
Does not support Wi-Fi 6 as this adapter only supports 802.11n/g/b standards, which are Wi-Fi 4, making it incompatible with Wi-Fi 6 networks
Can you stream 4K video using TL-WN821N?
Not recommended for 4K video viewing due to maximum speed of 300Mbps, which may not be sufficient for continuous 4K streaming. Recommended for HD or 1080p video instead
Can this be installed on a notebook without built-in Wi-Fi?
Yes, absolutely. This adapter connects via USB 2.0 port, so it works with any notebook that has a USB port and a supported operating system, regardless of whether it has built-in Wi-Fi
Can this be used with 5GHz networks?
No, because this adapter only supports 2.4GHz frequency and cannot connect to 5GHz Wi-Fi networks
Do you have driver installation issues?
Most users experience no issues, as this adapter supports Plug-and-Play drivers on Windows 11/10/8/7 and macOS 10.7–10.10 without requiring additional driver installation. However, if problems occur, drivers can be downloaded immediately from the TP-Link website
Can this be used with Mac computers?
Yes, it supports Mac OS X 10.7 to 10.10 and works immediately upon plugging in the USB without requiring additional driver installation on most operating systems
How long is the expected lifespan of this adapter?
Although it is in End of Life status, this adapter is designed for long-term use in environments with temperatures ranging from 0–40°C and meets industrial standard lifespan requirements. However, users should consider upgrading if long-term stability is desired.
Is the USB cable long enough?
Includes a USB extension cable that extends the usable range, allowing you to place the adapter farther from the device to improve signal strength and reduce interference from metal or other devices
Is it in stock?
We are confirming the latest stock and price of the TP-Link TL-WN821N 300Mbps Wireless N USB Adapter with the distributor. Please contact us before ordering at 092-251-4017 or sales@gist.co.th.
How much does it cost?
The distributor has not yet confirmed the latest price and availability. Please contact us before ordering at 092-251-4017 or sales@gist.co.th.
How long is the warranty?
The warranty follows the manufacturer's terms for each model; ask our sales team for the warranty period of this model. To make a warranty claim, call 092-251-4017 or 065-523-5262, or email sales@gist.co.th (Mon–Fri 9:00–18:00), then send the product with your order number to our head office, or bring it to the head office in person.
How long does delivery take?
Orders placed before 12:00 on a business day are delivered within 1–3 business days (Bangkok and vicinity) or 2–5 business days (other provinces). Free delivery on orders of ฿5,000 or more (a ฿150 delivery fee applies below this amount).
Is it genuine?
Genuine products sourced from distributors in Thailand, covered by the manufacturer's warranty. Full tax invoices are available.
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Genuine products
Sourced from distributors in Thailand and covered by the manufacturer's warranty
Warranty period
According to the manufacturer's terms for each model
Covered by the manufacturer's warranty; you can make claims through GIST
Claims through GIST
Ship the product to our head office or bring it in person
Warranty conditions
- A receipt or other proof of purchase is required
- The product must not have been modified or altered
- Damage caused by misuse is not covered by the warranty
- To make a warranty claim, call 092-251-4017 or 065-523-5262, or email sales@gist.co.th (Mon–Fri 9:00–18:00), then send the product with your order number to our head office, or bring it to the head office in person.Head office: 554 Sky Nine Center, Floor 12A, Room 554/62, Asok-Din Daeng Road, Din Daeng Subdistrict, Din Daeng District, Bangkok 10400
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