Help and Advice needed please

[ukinvestigation]

Hi guys,
i managed to remove my unit in my 1999 S8 today. i thought i had a Square RNS-c unit fitted.
can someone confirm this for me please .
the number on the unit is - 4D0 035 192C .

I need to know what unit i would be able to fit without to much messing about , ive seen some similar units ,theres a bosch unit vertually identical to mine , i saw on ebay " nissan connect " unit .

its doing my head in looking for something decent to fit .
any help or advice would be great .