Digium AEX800 FXO card stopping dell T150 server from booting

Dahdi version 2.11 is installed. Card is PCIe version1 I believe. Server has version 3 & 4 slots. PCIe is supposed to be foward & backward compatible. Card works in an older PC with version 2 pcie

A little more detail perhaps?

Pc freezes in boot process with card installed. Another older pc with same version of freepbx & dahdi the card & pc work fine. Card is version 1 pcie

Sorry not enough info to say anything else but ‘yep, it’s broke’