The TL-WN821N Wireless N USB Adapter complies with IEEE 802.11n (Draft 2.0), IEEE 802.11g, and IEEE 802.11b standards. Wireless transmission rates can reach up to 300Mbps. The adapter employs MIMO technology and has internal Intelligent Antennas providing even better wireless performance, transmission rates, stability and coverage. At the same time, CCA technology automatically avoids channel conflicts using its channel selection feature. This product supports 64/128-bit WEP encryptions, as well as WPA/WPA2 and WPA-PSK/WPA2-PSK encryptions and mechanisms in addition to the adapter’s QSS (Quick Secure Setup) feature, allowing users to quickly and easily setup wireless security. This product can also simultaneously operate bandwidth intensive applications such as voice, and video. Applications using a lot of bandwidth that are sensitive to interruptions such as voice and video applications are given priority in order to assure quality. It also works well with other 11g and 11n protocol wireless products.
- Provides two methods of operation: Infrastructure and Ad-Hoc
- Adopts MIMO technology for wireless rates of up to 300Mbps
- Adopts CCA technology which automatically avoids channel conflicts using its channel selection feature
- Quick Secure Setup, complies with WPS for worry free wireless security
- Supports 64/128-bit WEP, complies with 128 bit WPA standard(TKIP/AES), supports MIC, IV Expansion, Shared Key Authentication, IEEE 802.1X
- Simple Configuration and monitoring
- Supports Roaming technology, guaranteeing efficient wireless connections.
- Supports Windows 2000/XP/Vista OS

TP-Link TL-WN821N. Connectivity technology: Wireless, Host interface: USB, Interface: WLAN. Maximum data transfer rate: 300 Mbit/s, Top Wi-Fi standard: Wi-Fi 4 (802.11n), Wi-Fi band: Single-band (2.4 GHz). USB powered. Product color: Black, White

Connectivity technology	Wireless
Host interface	USB
Interface	WLAN
Maximum data transfer rate	300 Mbit/s
Networking standards	IEEE 802.11b, IEEE 802.11g, IEEE 802.11n
Wi-Fi	Yes
Wi-Fi band	Single-band (2.4 GHz)
Frequency range	2.4 - 2.4835 GHz
Top Wi-Fi standard	Wi-Fi 4 (802.11n)
Wi-Fi standards	802.11b, 802.11g, Wi-Fi 4 (802.11n)
WLAN data transfer rates supported	11,54,300 Mbit/s
Modulation	16-QAM, 64-QAM, CCK, DBPSK, DQPSK, OFDM
Supported network protocols	CSMA/CA, ACK
Internal	No
Component for	PC/Laptop
Product color	Black, White
Antenna	Yes
Antenna design	Internal
Transmitting power (CE)	20 dBm
Transmitting power (FCC)	20 dBm
WPS push button	Yes
Operating modes	Infrastructure mode
USB powered	Yes
Windows operating systems supported	Windows 7 Professional x64, Windows 8.1 Pro, Windows 10, Windows 7 Starter, Windows 8.1 Pro x64, Windows 10 Education, Windows 7 Starter x64, Windows 8.1 x64, Windows 10 Education x64, Windows 7 Ultimate, Windows 10 Enterprise, Windows 7 Ultimate x64, Windows 10 Enterprise x64, Windows 7 x64, Windows 10 Home, Windows 8, Windows 10 Home x64, Windows 7, Windows 8 Enterprise, Windows 10 IOT Core, Windows 7 Enterprise, Windows 8 Enterprise x64, Windows XP, Windows 10 IoT Enterprise, Windows 7 Enterprise x64, Windows 8 Pro, Windows XP Home, Windows 10 Pro, Windows 7 Home Basic, Windows 8 Pro x64, Windows XP Home x64, Windows 10 Pro x64, Windows 7 Home Basic x64, Windows 8 x64, Windows XP Professional, Windows 10 x64, Windows 7 Home Premium, Windows 8.1, Windows XP Professional x64, Windows 7 Home Premium x64, Windows 8.1 Enterprise, Windows 7 Professional, Windows 8.1 Enterprise x64
Mac operating systems supported	Mac OS X 10.15 Catalina
Linux operating systems supported	Yes
Operating temperature (T-T)	0 - 40 °C
Storage temperature (T-T)	-40 - 70 °C
Operating relative humidity (H-H)	10 - 90%
Storage relative humidity (H-H)	5 - 95%
Width	3.39" (86 mm)
Depth	1.02" (26 mm)
Height	0.472" (12 mm)
Package width	5.83" (148 mm)
Package depth	5.39" (137 mm)
Package height	1.65" (42 mm)
Package weight	5.29 oz (150 g)
Cables included	USB
Resource CD	Yes
Quick installation guide	Yes
Compliance certificates	CE, Federal Communications Commission (FCC), RoHS
Harmonized System (HS) code	85176990
Quick start guide	Yes
Sustainability compliance	Yes