Linux – How to get Alfa awus036nha to work with Kali Linux

I'm running Kali Linux 64bit 1.07 as a guest os through virtualbox 4.3.12 r93733. I've also installed the VirtualBox 4.3.12 Oracle VM VirtualBox Extension Pack. I have bridged my hosts network connection (Intel(R) Wireless-N 7260) with Kali and I have set up the Alfa 036nha as a usb device for Kali through virtualbox.

iwconfig in Kali gives no wireless extensions.

ifconfig shows my bridged connection and Local loopback.

lsusb shows:
Bus 001…… Atheros Communications, inc. AR9271 802.11n

I thought that maybe it didn't have the right drivers so i tried to apt-get install firmware-atheros but it said that it was already installed.

I really don't know what I should do here.. anyone care to help me out?
You should now that I'm not too good with Linux etc.

Edit:
I found this https://www.youtube.com/watch?v=K1ETBeRQBs4
Which helped me getting the Alfa card to work in Kali. The trick was to add a new custom USB device in virtualbox where you just take the vendor ID and product ID from the alfa device and leave the other boxes blank.

So now when i run ifconfig I get that wlan0 is up (Alfa) but eth0 is down (Intel(R) Wireless-N 7260).

Now however the problem is that when I plug in the Alfa device my network connection from my other wifi ceases to work (Intel(R) Wireless-N 7260) (the connection bridged from my host). It disconnects in the host aswell. If I connect to a wifi (with 7260) in the host with kali and alfa running the alfa stops working in Kali… I want to have them both running.

Anyone knows how to fix that?