Datapath VSN990 - Manual (Page 13)

Connecting Expansion Chassis (VSN900X)
It is possible to connect a VSN900X expansion chassis to the VSN990 thereby increasing the number of
PCIe slots available.
The following diagrams illustrate how this can be achieved:
Connecting the chassis is achieved by installing HLink-G3 and SLink-G3 cards in the VSN990 and
VSN900X and connecting the two cards using the Ex-Cable-G3.
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Fig.8
Fig.9 SLink-G3 Fig.10 HLink-G3
When connecting a VSN900X expansion chassis to a VSN990 machine the HLink-G3 card in the
VSN990 must be installed into the x8 slot. The SLink-G3 card in the VSN900X should be installed in the
PICMG1.3 SBC slot.
The HLink-G3 and Slink-G3 cards are factory installed into a system as a pair. When connecting expansion
chassis ensure that the pair labelled Link1 are connected using the ExCable-G3, the pair labelled Link2 are
connected together and so on. In the event that this is not possible, connect the expansion chassis to the
host machine and re-install the Datapath Driver Install to reset the pairings.