Sorry for the late reply, haven't got around to looking into Infiniband until just recently.
My CX-1 HCA was originally a HP one:
C:\>flint -d mt25418_pciconf0 query full
Image type: ConnectX
FW Version: 2.6.0
Device ID: 25418
Description: Node Port1 Port2 Sys image
GUIDs: 001a4bffff0c6214 001a4bffff0c6215 001a4bffff0c6216 001a4bffff0c6217
MACs: 001a4b0c6215 001a4b0c6216
VSD:
PSID: HP_09D0000001
But then I changed it over to the Mellanox one:
C:\Program Files\Mellanox\WinMFT>flint -d mt25418_pciconf0 query
Image type: ConnectX
FW Version: 2.9.1000
Device ID: 25418
Description: Node Port1 Port2 Sys image
GUIDs: 001a4bffff0c6214 001a4bffff0c6215 001a4bffff0c6216 001a4bffff0c6217
MACs: 001a4b0c6215 001a4b0c6216
VSD:
PSID: MT_04A0110002