P500 for EU output

Hello Gentlemen,

I just purchased a P500 from ebay, was delivered with a 115V transformer installed for output connectors, as well as a separate 230V transformer for use in Europe. I opened the P500, but was not able to install the EU transformer as the cabling is not the same.

Picture of the new transformer to install:

Any help greatly appreciated!

Additional info
The new transformer is smaller than the one installed in the P500
There is no wire to connect to the power board in the P500

I’m a little bit confused…