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Man Pages
RUM(4) FreeBSD Kernel Interfaces Manual RUM(4)

rum
Ralink Technology USB IEEE 802.11a/b/g wireless network device

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"

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 throughput.
All chips have hardware support for WEP, AES-CCM, TKIP, and Michael cryptographic operations.
rum supports station, adhoc, adhoc-demo, hostap, and monitor mode operation. Only one virtual interface may be configured at any time. For more information on configuring this device, see ifconfig(8).

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
Buffalo WLI-UC-G 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 v1/v2/v3 USB

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

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.

intro(4), netintro(4), usb(4), wlan(4), wlan_amrr(4), wlan_ccmp(4), wlan_tkip(4), wlan_wep(4), wlan_xauth(4), hostapd(8), ifconfig(8), wpa_supplicant(8).
Ralink Technology, http://www.ralinktech.com/.

The rum driver first appeared in OpenBSD 4.0.

The original rum driver was written by Niall O'Higgins <niallo@openbsd.org> and Damien Bergamini <damien@openbsd.org>.
November 8, 2018 FreeBSD 12.0-RELEASE

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