Version 2 of TP-Link TL-WN725N driver doesn’t come by default in Raspbian so it won’t work by just plug-ining it in.
You can compile the driver by yourself (very slow) or just download an already compiled one and install it:
wget https://dl.dropboxusercontent.com/u/80256631/8188eu-20130209.tar.gz tar -zxvf 8188eu-20130209.tar.gz sudo install -p -m 644 8188eu.ko /lib/modules/`uname -r`/kernel/drivers/net/wireless sudo depmod -a sudo modprobe 8188eu
There is another version of the driver here in case that one in Dropbox disappears: http://file.zhujunsan.net/8188eu.ko
I used the Wifi Config (wpa_gui) application to configure my wifi network settings under the desktop environment. This application automatically configured /etc/wpa_supplicant/wpa_supplicant.conf file for me:
ctrl_interface=DIR=/var/run/wpa_supplicant GROUP=netdev
update_config=1
network={
ssid="WLAN"
psk="XXXXXXXXXXXX"
proto=RSN
key_mgmt=WPA-PSK
pairwise=CCMP
auth_alg=OPEN
}
Your configuration may be different of course. ssid represents the name of the network and psk it’s password.
I also had to configure the DNS servers to be able to resolve names from the internet. This is done by editing the /etc/resolv.conf file. Just add your DNS servers (usually your ISP gives you those IPs) or use 8.8.4.4 and 8.8.8.8 (DNS servers from Google):
nameserver 8.8.4.4 nameserver 8.8.8.8
Source: http://blog.pi3g.com/2013/05/tp-link-tl-wn725n-nano-wifi-adapter-v2-0-raspberry-pi-driver/
https://www.zhujunsan.net/index.php/2013/03/make-tp-link-tl-wn725n-v2-work-on-raspbian/