TP-LINK TL-WN821N v4

multiple revisions of this device, use caution

bgn (N300)
300Mbps Wireless N USB Adapter
Homepage	Product page
Support	Support page
WikiDevi.wi-cat.ru	TP-LINK TL-WN821N v4
Platform
Brand • Model • Rev	TP-LINK TL-WN821N v4
Series	TL-WN821N
Interface	USB 2.0
Connector	Male A
Form factor	dongle
ID:0bda:8178 (7 addl. devices) Windows: USB\VID_0BDA&PID_8178
FCCID	TE7WN821NV4
Chip1	Realtek RTL8192CU
OUI: E8:DE:27 (2 E, 2 W)
MIMO status	2x2:2
Wireless Standards	IEEE 802.11b/g/n
802.11n	up to 300 Mbps
802.11g	up to 54 Mbps
802.11b	up to 11 Mbps
Operating Frequency	2.4 GHz
Other
Manuf/OEM/ODM	TP-LINK
Probable Linux driver rtl8192cu, rtl8xxxu (WIP?) (in backports) USB ID first seen in kernel v3.3 (2012-03-18) (see also passys)
Windows driver possibly see Realtek's website, but the majority of legacy drivers have been removed know a better source? LMK
Retail
Availability	common
FCC approval date	21 December 2012
EAN	6935364090067 (UPC DB, On eBay)
ASIN	B002T4D3M2 ,  multiple uses
Chip1 brand Chip2 brand TP-LINK TL-WN821N v1 Atheros Atheros TP-LINK TL-WN821N v2 Atheros Atheros TP-LINK TL-WN821N v3 Atheros Atheros TP-LINK TL-WN821N v4 Realtek TP-LINK TL-WN821N v5 Realtek TP-LINK TL-WN821N v6 Realtek

For a list of all currently documented Realtek chipsets with specifications, see Realtek.

For a list of all currently documented TP-LINK device with specifications, see TP-LINK.

• 300 Mbps - 2SS 2.4GHz 802.11n (40MHz chan.) = N300 class

Overview

• "Rev:1.0" and "2052500371" appears to be silkscreened on the bottom side of the board in the FCC photos.
• "Rev:1.1", "2052500381", and "GFM0120008" appears silkscreened on the bottom side of the board with serial "12C71900408".

Pictures

Retail Images

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User Images

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  Version 4.2, Side 1

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  Version 4.2, Side 2

Notes

Technical info

(on Ubuntu 14.04 LTS, Linux kernel 3.13)

iw phy0 info

Wiphy phy0 Band 1: Capabilities: 0x1862 HT20/HT40 Static SM Power Save RX HT20 SGI RX HT40 SGI No RX STBC Max AMSDU length: 7935 bytes DSSS/CCK HT40 Maximum RX AMPDU length 65535 bytes (exponent: 0x003) Minimum RX AMPDU time spacing: 16 usec (0x07) HT TX/RX MCS rate indexes supported: 0-15, 32 Frequencies: * 2412 MHz [1] (20.0 dBm) * 2417 MHz [2] (20.0 dBm) * 2422 MHz [3] (20.0 dBm) * 2427 MHz [4] (20.0 dBm) * 2432 MHz [5] (20.0 dBm) * 2437 MHz [6] (20.0 dBm) * 2442 MHz [7] (20.0 dBm) * 2447 MHz [8] (20.0 dBm) * 2452 MHz [9] (20.0 dBm) * 2457 MHz [10] (20.0 dBm) * 2462 MHz [11] (20.0 dBm) * 2467 MHz [12] (disabled) * 2472 MHz [13] (disabled) * 2484 MHz [14] (disabled) Bitrates (non-HT): * 1.0 Mbps * 2.0 Mbps * 5.5 Mbps * 11.0 Mbps * 6.0 Mbps * 9.0 Mbps * 12.0 Mbps * 18.0 Mbps * 24.0 Mbps * 36.0 Mbps * 48.0 Mbps * 54.0 Mbps max # scan SSIDs: 4 max scan IEs length: 2257 bytes RTS threshold: 2347 Coverage class: 0 (up to 0m) Supported Ciphers: * WEP40 (00-0f-ac:1) * WEP104 (00-0f-ac:5) * TKIP (00-0f-ac:2) * CCMP (00-0f-ac:4) * CMAC (00-0f-ac:6) Available Antennas: TX 0 RX 0 Supported interface modes: * IBSS * managed * AP * AP/VLAN * monitor * mesh point * P2P-client * P2P-GO software interface modes (can always be added): * AP/VLAN * monitor interface combinations are not supported Supported commands: * new_interface * set_interface * new_key * new_beacon * new_station * new_mpath * set_mesh_params * set_bss * authenticate * associate * deauthenticate * disassociate * join_ibss * join_mesh * set_tx_bitrate_mask * action * frame_wait_cancel * set_wiphy_netns * set_channel * set_wds_peer * Unknown command (84) * Unknown command (87) * Unknown command (85) * Unknown command (89) * Unknown command (92) * connect * disconnect Supported TX frame types: * IBSS: 0x00 0x10 0x20 0x30 0x40 0x50 0x60 0x70 0x80 0x90 0xa0 0xb0 0xc0 0xd0 0xe0 0xf0 * managed: 0x00 0x10 0x20 0x30 0x40 0x50 0x60 0x70 0x80 0x90 0xa0 0xb0 0xc0 0xd0 0xe0 0xf0 * AP: 0x00 0x10 0x20 0x30 0x40 0x50 0x60 0x70 0x80 0x90 0xa0 0xb0 0xc0 0xd0 0xe0 0xf0 * AP/VLAN: 0x00 0x10 0x20 0x30 0x40 0x50 0x60 0x70 0x80 0x90 0xa0 0xb0 0xc0 0xd0 0xe0 0xf0 * mesh point: 0x00 0x10 0x20 0x30 0x40 0x50 0x60 0x70 0x80 0x90 0xa0 0xb0 0xc0 0xd0 0xe0 0xf0 * P2P-client: 0x00 0x10 0x20 0x30 0x40 0x50 0x60 0x70 0x80 0x90 0xa0 0xb0 0xc0 0xd0 0xe0 0xf0 * P2P-GO: 0x00 0x10 0x20 0x30 0x40 0x50 0x60 0x70 0x80 0x90 0xa0 0xb0 0xc0 0xd0 0xe0 0xf0 * Unknown mode (10): 0x00 0x10 0x20 0x30 0x40 0x50 0x60 0x70 0x80 0x90 0xa0 0xb0 0xc0 0xd0 0xe0 0xf0 Supported RX frame types: * IBSS: 0x40 0xb0 0xc0 0xd0 * managed: 0x40 0xd0 * AP: 0x00 0x20 0x40 0xa0 0xb0 0xc0 0xd0 * AP/VLAN: 0x00 0x20 0x40 0xa0 0xb0 0xc0 0xd0 * mesh point: 0xb0 0xc0 0xd0 * P2P-client: 0x40 0xd0 * P2P-GO: 0x00 0x20 0x40 0xa0 0xb0 0xc0 0xd0 * Unknown mode (10): 0x40 0xd0 Device supports RSN-IBSS. HT Capability overrides: * MCS: ff ff ff ff ff ff ff ff ff ff * maximum A-MSDU length * supported channel width * short GI for 40 MHz * max A-MPDU length exponent * min MPDU start spacing Device supports TX status socket option. Device supports HT-IBSS.

dmesg

[15544.200093] usb 3-1: new high-speed USB device number 5 using xhci_hcd
[15544.217529] usb 3-1: New USB device found, idVendor=0bda, idProduct=8178
[15544.217536] usb 3-1: New USB device strings: Mfr=1, Product=2, SerialNumber=3
[15544.217540] usb 3-1: Product: USB WLAN
[15544.217542] usb 3-1: Manufacturer: 802.11n
[15544.217545] usb 3-1: SerialNumber: xxxxxxxxxxxx
[15544.259463] rtl8192cu: Chip version 0x11
[15544.295146] rtl8192cu: MAC address: e8:de:27:xx:xx:xx
[15544.295154] rtl8192cu: Board Type 0
[15544.295223] rtl_usb: rx_max_size 15360, rx_urb_num 8, in_ep 1
[15544.295281] rtl8192cu: Loading firmware rtlwifi/rtl8192cufw_TMSC.bin
[15544.295453] usbcore: registered new interface driver rtl8192cu
[15544.296228] ieee80211 phy1: Selected rate control algorithm 'rtl_rc'
[15544.296884] rtlwifi: wireless switch is on