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I currently have a wifi usb dongle attached to my raspberry pi 1 model B, however it is not getting picked up. I think that the wifi dongle is probably not supported but would like to just confirm.

I can see the pi pick up the USB when I run dmesg:

[    3.061377] NET: Registered protocol family 10
[    3.073439] systemd[1]: Inserted module 'ipv6'
[    3.090634] systemd[1]: Set hostname to <raspberrypi>.
[    3.115947] smsc95xx 1-1.1:1.0 eth0: register 'smsc95xx' at usb-20980000.usb-1.1, smsc95xx USB 2.0 Ethernet, b8:27:eb:5e:8d:a8
[    3.227388] usb 1-1.2: new high-speed USB device number 4 using dwc_otg
[    3.322353] uart-pl011 20201000.uart: no DMA platform data
[    3.370245] random: systemd-sysv-ge: uninitialized urandom read (16 bytes read, 63 bits of entropy available)
[    3.397360] usb 1-1.2: New USB device found, idVendor=0e8d, idProduct=7610
[    3.410517] usb 1-1.2: New USB device strings: Mfr=1, Product=2, SerialNumber=3
[    3.423836] usb 1-1.2: Product: WiFi
[    3.433170] usb 1-1.2: Manufacturer: MediaTek
[    3.443483] usb 1-1.2: SerialNumber: 1.0
[    3.587318] usb 1-1.3: new low-speed USB device number 5 using dwc_otg
[    3.648243] random: systemd: uninitialized urandom read (16 bytes read, 65 bits of entropy available)
[    3.665961] random: systemd: uninitialized urandom read (16 bytes read, 65 bits of entropy available)
[    3.683745] random: systemd: uninitialized urandom read (16 bytes read, 65 bits of entropy available)
[    3.733949] random: systemd: uninitialized urandom read (16 bytes read, 67 bits of entropy available)
[    3.749839] usb 1-1.3: New USB device found, idVendor=413c, idProduct=2003
[    3.762602] usb 1-1.3: New USB device strings: Mfr=1, Product=2, SerialNumber=0
[    3.775616] usb 1-1.3: Product: Dell USB Keyboard
[    3.785910] usb 1-1.3: Manufacturer: Dell

I can also see it whilst running the command lsusb:

Bus 001 Device 005: ID 413c:2003 Dell Computer Corp. Keyboard
Bus 001 Device 004: ID 0e8d:7610 MediaTek Inc.
Bus 001 Device 003: ID 0424:ec00 Standard Microsystems Corp. SMSC9512/9514 Fast Ethernet Adapter
Bus 001 Device 002: ID 0424:9512 Standard Microsystems Corp. LAN9500 Ethernet 10/100 Adapter / SMSC9512/9514 Hub
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub

and here is the lsmod output:

Module                  Size  Used by
cfg80211              500739  0
rfkill                 21397  1 cfg80211
evdev                  11650  1
snd_bcm2835            23131  0
snd_pcm                95473  1 snd_bcm2835
snd_timer              22556  1 snd_pcm
snd                    68400  3 snd_bcm2835,snd_timer,snd_pcm
bcm2835_gpiomem         3823  0
bcm2835_wdt             4133  0
uio_pdrv_genirq         3718  0
uio                    10230  1 uio_pdrv_genirq
ipv6                  367671  28

also here is my /etc/network/interfaces file:

# interfaces(5) file used by ifup(8) and ifdown(8)

# Please note that this file is written to be used with dhcpcd
# For static IP, consult /etc/dhcpcd.conf and 'man dhcpcd.conf'

# Include files from /etc/network/interfaces.d:
source-directory /etc/network/interfaces.d

auto lo
iface lo inet loopback

auto eth0
iface eth0 inet dhcp

#wifi network interface
allow-hotplug wlan0
iface wlan0 inet manual
    #wpa-conf /etc/wpa_supplicant/wpa_supplicant.conf
    wireless-ssid [ssid]
    wireless-key [pass]

iface default inet dhcp
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The wifi dongle is being detected, but the driver is probably not present.

The output of lsmod shows that the normal WiFi module cfg80211 is not being used by by devices.

You do not make life any easier for yourself by using non-standard settings (see How do I set up networking/WiFi/Static IP ) , although this does not appear to be your problem.

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