rtwn_usb(4)

rtwn_usb4

Realtek wireless rtwn network driver usb support

Usage

To compile this driver into the kernel, place the following lines in your kernel configuration file:

device xhci device ehci device uhci device ohci device usb device rtwn device rtwn_usb device wlan

Overview

The rtwn_usb driver provides support for USB wireless network devices to the rtwn(4) driver.

Hardware

The rtwn_usb driver supports USB wireless network adapters based on certain Realtek RTL 8188/8192/8723/8812 and 8821 chipsets, including:

CardChipBus
Alfa AWUS036NHR v2RTL8188RUUSB 2.0
ASUS USB-AC56RTL8812AUUSB 3.0
ASUS USB-N10 NANORTL8188CUSUSB 2.0
ASUS USB-N10 NANO rev B1RTL8188EUSUSB 2.0
Asus USB-N13, rev. B1RTL8192CUUSB 2.0
Belkin F7D1102 Surf Wireless MicroRTL8188CUSUSB 2.0
Buffalo WI-U2-433DHPRTL8821AUUSB 2.0
Buffalo WI-U2-433DMRTL8821AUUSB 2.0
Buffalo WI-U3-866DRTL8812AUUSB 3.0
D-Link DWA-121 rev C1A (N150 Nano)RTL8188EUUSB 2.0
D-Link DWA-123 rev D1RTL8188EUUSB 2.0
D-Link DWA-125 rev D1RTL8188EUUSB 2.0
D-Link DWA-131RTL8192CUUSB 2.0
D-Link DWA-131 rev E1RTL8192EUUSB 2.0
D-Link DWA-171 rev A1RTL8821AUUSB 2.0
D-Link DWA-172 rev A1RTL8821AUUSB 2.0
D-Link DWA-180 rev A1RTL8812AUUSB 2.0
D-Link DWA-182 rev C1RTL8812AUUSB 3.0
Edimax EW-7611ULBRTL8723BUUSB 2.0
Edimax EW-7811UnRTL8188CUSUSB 2.0
Edimax EW-7811UTCRTL8821AUUSB 2.0
Edimax EW-7822UACRTL8812AUUSB 3.0
EDUP EP-AC1620RTL8821AUUSB 2.0
Elecom WDC-150SU2MRTL8188EUUSB 2.0
EnGenius EUB1200ACRTL8812AUUSB 3.0
Foxconn WFUR6RTL8812AUUSB 2.0
Hawking HD65URTL8821AUUSB 2.0
Hercules Wireless N USB PicoRTL8188CUSUSB 2.0
I-O Data WN-AC867URTL8812AUUSB 3.0
Linksys WUSB6300RTL8812AUUSB 3.0
NEC AtermWL900U PA-WL900URTL8812AUUSB 3.0
Netgear A6100RTL8821AUUSB 2.0
Netgear WNA1000MRTL8188CUSUSB 2.0
Mercusys MW150USRTL8188EUUSB 2.0
Planex GW-900DRTL8812AUUSB 3.0
Realtek RTL8723BURTL8723BUUSB 2.0
Realtek RTL8192CURTL8192CUUSB 2.0
Realtek RTL8188CUSRTL8188CUSUSB 2.0
Sitecom WLA-7100RTL8812AUUSB 3.0
TP-Link Archer T2U NanoRTL8821AUUSB 2.0
TP-Link Archer T2U PlusRTL8821AUUSB 2.0
TP-Link Archer T2U v3RTL8821AUUSB 2.0
TP-Link Archer T4URTL8812AUUSB 3.0
TP-Link Archer T4U v2RTL8812AUUSB 3.0
TP-Link Archer T4UH v1RTL8812AUUSB 3.0
TP-Link Archer T4UH v2RTL8812AUUSB 3.0
TP-Link TL-WN722N v2RTL8188EUUSB 2.0
TP-LINK TL-WN723N v3RTL8188EUUSB 2.0
TP-LINK TL-WN725N v2RTL8188EUUSB 2.0
TP-LINK TL-WN727N v5RTL8188EUUSB 2.0
TP-LINK TL-WN821N v4RTL8192CUUSB 2.0
TP-LINK TL-WN821N v5RTL8192EUUSB 2.0
TP-LINK TL-WN822N v4RTL8192EUUSB 2.0
TP-LINK TL-WN823N v1RTL8192CUUSB 2.0
TP-LINK TL-WN823N v2RTL8192EUUSB 2.0
TRENDnet TEW-805UBRTL8812AUUSB 3.0
ZyXEL NWD6605RTL8812AUUSB 3.0

Releases

20 releases since FreeBSD 12.0-RELEASE; the text changed 10 times.

  1. 12.0
  2. 12.1
  3. 12.2
  4. 12.3
  5. 12.4
  6. 13.0
  7. 13.1–13.2
  8. 13.3–13.5
  9. 14.0–14.1
  10. 14.2–15.1
  11. 16.0

Bugs

The rtwn_usb driver does not support any of the 802.11ac capabilities offered by the adapters. Additional work is required in ieee80211(9) before those features can be supported.

From base 16.0-CURRENT-20261027-61c70dc16a79 in FreeBSD 16.0-CURRENT (2026-10-27). Parsed by carta from the page's mdoc source.