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URTWN(4)	       FreeBSD Kernel Interfaces Manual		      URTWN(4)

NAME
     urtwn -- Realtek RTL8188CU/RTL8192CU USB IEEE 802.11b/g/n wireless	net-
     work device

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

	   device ehci
	   device uhci
	   device ohci
	   device usb
	   device urtwn
	   device wlan

     Alternatively, to load the	driver as a module at boot time, place the
     following line in loader.conf(5):

	   if_urtwn_load="YES"

DESCRIPTION
     The urtwn driver supports USB 2.0 wireless	network	devices	based on Real-
     tek RTL8188CUS, RTL8188CE-VAU, RTL8188RU and RTL8192CU chipsets.

     The RTL8188CUS is a highly	integrated 802.11n adapter that	combines a
     MAC, a 1T1R capable baseband and an RF in a single	chip.  It operates in
     the 2GHz spectrum only.  The RTL8188RU is a high-power variant of the
     RTL8188CUS.  The RTL8188CE-VAU is a PCI Express Mini Card adapter that
     attaches to the USB interface.

     The RTL8192CU is a	highly integrated multiple-in, multiple-out (MIMO)
     802.11n adapter that combines a MAC, a 2T2R capable baseband and an RF in
     a single chip.  It	operates in the	2GHz spectrum only.

HARDWARE
     The following adapters should work:

	   Belkin F7D1102 Surf Wireless	Micro
	   D-Link DWA-131
	   Edimax EW-7811Un
	   Netgear WNA1000M
	   Realtek RTL8192CU
	   Realtek RTL8188CUS

EXAMPLES
     Join an existing BSS network (i.e., connect to an access point):

	   ifconfig wlan create	wlandev	urtwn0 inet 192.168.0.20 \
	       netmask 0xffffff00

     Join a specific BSS network with network name ``my_net'':

	   ifconfig wlan create	wlandev	urtwn0 ssid my_net up

     Join a specific BSS network with 64-bit WEP encryption:

	   ifconfig wlan create	wlandev	urtwn0 ssid my_net \
		   wepmode on wepkey 0x1234567890 weptxkey 1 up

DIAGNOSTICS
     urtwn%d: error %d,	could not read firmware	%s  For	some reason, the
     driver was	unable to read the microcode file from the filesystem.	The
     file might	be missing or corrupted.

     urtwn%d: device timeout  A	frame dispatched to the	hardware for transmis-
     sion did not complete in time.  The driver	will reset the hardware.  This
     should not	happen.

SEE ALSO
     intro(4), netintro(4), usb(4), wlan(4), wlan_ccmp(4), wlan_tkip(4),
     wlan_wep(4), ifconfig(8), wpa_supplicant(8)

     Realtek, http://www.realtek.com.tw.

HISTORY
     The urtwn driver first appeared in	OpenBSD	4.9 and	FreeBSD	10.0.

AUTHORS
     The urtwn driver was written by Damien Bergamini <damien@openbsd.org>.

CAVEATS
     The urtwn driver does not support any of the 802.11n capabilities offered
     by	the adapters.

FreeBSD	10.1			October	6, 2013			  FreeBSD 10.1

NAME | SYNOPSIS | DESCRIPTION | HARDWARE | EXAMPLES | DIAGNOSTICS | SEE ALSO | HISTORY | AUTHORS | CAVEATS

Want to link to this manual page? Use this URL:
<http://www.freebsd.org/cgi/man.cgi?query=urtwn&manpath=FreeBSD+10.0-RELEASE>

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