How do I install a wifi-adapter? (RTL8191SU)

[Stefan2016]

Hello,

 

sorry if this might seem stupid.

I have an Orange Pi Zero Board.

I have an armbian running on it (jesse).

I have an usb-wifi-adapter connected to the onboard-usb-jack.

 

'lsusb'  sais:

 

 

Bus 008 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub

Bus 007 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub

Bus 006 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub

Bus 005 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub

Bus 004 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub

Bus 003 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub

Bus 002 Device 002: ID 0bda:8172 Realtek Semiconductor Corp. RTL8191SU 802.11n WLAN Adapter

Bus 002 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub

Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub

 

I cannot see the device by typing "ifconfig -a"

wlan0 is shown (onboard-wifi), but where`s my expected wlan1 ?

 

I tried:  "apt-get install firmware-realtek", but it sais:

 

 

Reading package lists... Done

Building dependency tree

Reading state information... Done

The following NEW packages will be installed:

  firmware-realtek

0 upgraded, 1 newly installed, 0 to remove and 14 not upgraded.

Need to get 0 B/208 kB of archives.

After this operation, 719 kB of additional disk space will be used.

(Reading database ... 43669 files and directories currently installed.)

Preparing to unpack .../firmware-realtek_0.43_all.deb ...

Unpacking firmware-realtek (0.43) ...

dpkg: error processing archive /var/cache/apt/archives/firmware-realtek_0.43_all.deb (--unpack):

 trying to overwrite '/lib/firmware/RTL8192SU/rtl8192sfw.bin', which is also in package armbian-firmware 5.24

dpkg-deb: error: subprocess paste was killed by signal (Broken pipe)

Errors were encountered while processing:

 /var/cache/apt/archives/firmware-realtek_0.43_all.deb

E: Sub-process /usr/bin/dpkg returned an error code (1)

 

 

What am I missing?