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RUM(4)			 BSD Kernel Interfaces Manual			RUM(4)

NAME
     rum — Ralink Technology USB IEEE 802.11a/b/g wireless network 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 rum
	   device wlan
	   device wlan_amrr

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

	   if_rum_load="YES"

DESCRIPTION
     The rum driver supports USB 2.0 and PCI Express Mini Card wireless
     adapters based on the Ralink RT2501USB and RT2601USB chipsets.

     Ralink PCI Express Mini Card adapters show up as normal USB 2.0 devices
     and are thus handled by the rum driver.

     The RT2501USB chipset is the second generation of 802.11a/b/g adapters
     from Ralink.  It consists of two integrated chips, an RT2571W MAC/BBP and
     an RT2528 or RT5226 radio transceiver.

     The RT2601USB chipset consists of two integrated chips, an RT2671 MAC/BBP
     and an RT2527 or RT5225 radio transceiver.	 This chipset uses the MIMO
     (multiple-input multiple-output) technology with multiple antennas to
     extend the operating range of the adapter and to achieve higher through‐
     put.

     rum supports station, adhoc, hostap, and monitor mode operation.  Only
     one virtual interface may be configured at any time.  For more informa‐
     tion on configuring this device, see ifconfig(8).

HARDWARE
     The rum driver supports USB 2.0 wireless adapters based on the Ralink
     RT2501USB and RT2601USB chipsets, including:

     Card			  Bus
     3Com Aolynk WUB320g	  USB
     Abocom WUG2700 Ta		  USB
     Airlink101 AWLL5025	  USB
     ASUS WL-167g ver 2		  USB
     Belkin F5D7050 ver 3	  USB
     Belkin F5D9050 ver 3	  USB
     Buffalo WLI-U2-SG54HP	  USB
     Buffalo WLI-U2-SG54HG	  USB
     Buffalo WLI-U2-G54HP	  USB
     CNet CWD-854 ver F		  USB
     Conceptronic C54RU ver 2	  USB
     Corega CG-WLUSB2GO		  USB
     D-Link DWA-110		  USB
     D-Link DWA-111		  USB
     D-Link DWL-G122 rev C1	  USB
     D-Link WUA-1340		  USB
     Digitus DN-7003GR		  USB
     Edimax EW-7318USG		  USB
     Gigabyte GN-WB01GS		  USB
     Gigabyte GN-WI05GS		  USB
     Hawking HWUG1		  USB
     Hawking HWU54DM		  USB
     Hercules HWGUSB2-54-LB	  USB
     Hercules HWGUSB2-54V2-AP	  USB
     LevelOne WNC-0301USB v3	  USB
     Linksys WUSB54G rev C	  USB
     Linksys WUSB54GR		  USB
     Planex GW-US54HP		  USB
     Planex GW-US54Mini2	  USB
     Planex GW-USMM		  USB
     Senao NUB-3701		  USB
     Sitecom WL-113 ver 2	  USB
     Sitecom WL-172		  USB
     Sweex LW053		  USB
     TP-LINK TL-WN321G		  USB

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

	   ifconfig wlan create wlandev rum0 inet 192.168.0.20 \
	       netmask 0xffffff00

     Join a specific BSS network with network name “my_net”:

	   ifconfig wlan create wlandev rum0 ssid my_net up

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

	   ifconfig wlan create wlandev rum0 ssid my_net \
		   wepmode on wepkey 0x1234567890 weptxkey 1 up

     Join a specific BSS network with 128-bit WEP encryption:

	   ifconfig wlan create wlandev rum0 wlanmode adhoc ssid my_net \
	       wepmode on wepkey 0x01020304050607080910111213 weptxkey 1

DIAGNOSTICS
     rum%d: could not load 8051 microcode  An error occurred while attempting
     to upload the microcode to the onboard 8051 microcontroller unit.	The
     driver will reset the hardware.  This should not happen.

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

     Ralink Technology, http://www.ralinktech.com/.

HISTORY
     The rum driver first appeared in OpenBSD 4.0.

AUTHORS
     The original rum driver was written by Niall O'Higgins
     ⟨niallo@openbsd.org⟩ and
     Damien Bergamini ⟨damien@openbsd.org⟩.

BUGS
     Host AP mode doesn't support client power save.  Clients using power save
     mode will experience packet loss (disabling power saving on the client
     will fix this).

BSD				April 13, 2008				   BSD
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