Virtualbox - USB to Serial adapter

I'm not having much luck getting a USB to Serial adapter working on a Windows 7 guest on Virtualbox

Here's the environment:
Host: Slackware 14.1-64
Guest: WIndows 7-64
Virtualbox - 5.0.6

The adapter is identified as a "Prolific Technology, Inc. PL2303 Serial Port" using /dev/ttyUSB0

On the host, I have verified the cable works through a test connection to a Cisco router via minicom. No problems

In Virtualbox, the usb cable is not seen, I have tried setting up a USB filter, but the windows guest does not see it
and I have setup a serial connection within Virtualbox using com1 against the host device /dev/ttyUSB0, which results in the com port not being usable under the windows guest

Anyone have solution?
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Gerwin Jansen, EE MVETopic Advisor Commented:
kenfcampAuthor Commented:

Yea I thought of that too, uninstalled and reinstalled the extension pack w/ no change
Other usb devices - thumb drive, etc work fine
Besides downloading the extension pack, did you also install the VirtualBox Addons within the VM?
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kenfcampAuthor Commented:
:) Yes, the extension pack has been installed (a couple of times) and loads on the guest
kenfcampAuthor Commented:
Actually it looks like I spoke too fast

VBox doesn't notice the host USB thumb drive either

NOTE: It works fine on a different machine/setup, haven't tried the usb/serial though

I wonder if it's a issue w/ the VBox version

kenfcampAuthor Commented:
I'm an idiot :\

Never added the user to the vboxuser group...

Once added everything works just fine including the adapter

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Gerwin Jansen, EE MVETopic Advisor Commented:
Good to hear you've solved it ;)
kenfcampAuthor Commented:
I figured out the problem, but the suggestions provided by the others caused me to revisit the early stages of the installation review the setup. It was then, I found the issue...

Thanks for the help guys, if it weren't for your suggestions, I doubt I would have thought of it
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