Enable Dlink DWA-110 USB Wireless Adapter on CentOs 5.4

Plug in the USB wireless adapter

Check the chipset of the USB wireless adapter by using following command.

[root@localhost sbin]# lsusb
Bus 005 Device 001: ID 0000:0000
Bus 001 Device 004: ID 07d1:3c07 D-Link System Wireless G DWA-110 Adapter

[root@localhost sbin]# lsmod | grep rt
rt73usb 60481 0
crc_itu_t 35265 1 rt73usb
rt2x00usb 47041 1 rt73usb
rt2x00lib 56641 2 rt73usb,rt2x00usb
mac80211 182985 2 rt2x00usb,rt2x00lib
cfg80211 63825 2 rt2x00lib,mac80211

Enable ELRepo repository

To install ELRepo for RHEL5, CentOS-5 or SL5:

rpm -Uvh http://elrepo.org/elrepo-release-0.1-1.el5.elrepo.noarch.rpm

Import the public key:

rpm --import http://elrepo.org/RPM-GPG-KEY-elrepo.org

Install firmware for Dlink DWA-110 wireless adapter:
yum --enablerepo=elrepo install rt73usb-firmware

Open NetworkManager serveice at the system start up:
chkconfig NetworkManager on

service NetworkManager start

Turn off network and wpa_supplicant services at boot time as NetworkManager will in charge the network connections.
chkconfig network off
chkconfig wpa_supplicant off


Reference:

Making Wireless work on your laptop(or desktop) http://wiki.centos.org/HowTos/Laptops/Wireless#head-a7388039af96da5400e599133447452d2ca61fb5