[MBQ AW-10E vs MBQ AW-10C]

Hi, I'm a newbie on car audio but I think it is not MB Quart. I found the similar product on eBay. Thanks mate.
https://www.ebay.com.au/itm/190826740667

[Mercedes Benz W203 2004 Car Stereo]

Hi guys, I had recently bought a JVC KW-V940BW and bring to a professional installer however he told me that this unit is not compatible in my Mercedes Benz W203 2004 as there has a fibre optic connector and it is unable to plug in the JVC KW-V940BW. Otherwise my speakers are affected (I'm not sure what is this). have anyone here experienced on this?
I'm not sure what I can do now after I bought this stereo and it is not compatible with my car. :(

Thank you

[MBQ AW-10E vs MBQ AW-10C]

Hi guys, do you guys heard MBQ brands before? I'm interesting with these 2 subwoofers MBQ AW-10E and MBQ AW-10C but I'm not sure which sub will be better. Are you guys could help me on this? Thank you