Color Classic with Ethernet board, no connection

[amedeo_68k]

Hi all,
I have a color classic with an Asante Ethernet board installed.
Drivers are fine, card gets recognized, but there is no way to estabilish a link, green light turns on, but no luck.

If I instead use an Asante SC/EC (Scsi / Ethernet) adapter it works perfecly.

I tried with normal cable, cross cable, 10mbit only switch, no way.

Ideas ?
Thank you

 

[amedeo_68k]

Update: pictures of the not-working board, there is a funny resistor soldered directly to the back of the PSD connector

 

[amedeo_68k]

Update 2: a working board I have found today, I cannot realize which brand is it