Step7 - where can I check the GSD data for a Profibus DP slave

After having to load a two year old backup in order to get a working HW-Config / System database, I've now finished up with a non-working Beckhoff DP-terminal slave. As far as I can see in the properties box all the details are identical.

Is there somwhere where I can check whether or not the GSD info is identical. We've tried swapping the H/W to no avail, so I'm wondering if I might have an out-of-date version of the GSD file.

What type of Beckhoff hw is it ?

Problem solved - in checking that the configuration of the old and new HW-Config were the same, I didn't notice that one extra group of digital inputs had been added since the original version. Having added that the DP communication started working OK.