I've been searching and searching, but unable to find any user's manual for the Ulsi Systems 3C87-40 coprocessor. As is is not obvious which orientation to install them in (and I broke one 387sx before) I thought to ask if anyone has any links/documents for those?

I found a picture of my motherboard on thertroweb showing the coprocessor installed "sideways" (bottom towards ram), but this is just one picture and I really don't want to break this chip.

Here is the chip:

Here is the motherboard socket:

This motherboard is a Data Expert 367c Rev 1.