RDK Port Expander Kit Hardware Reference Manual v1.0
© 2007, PLX Technology, Inc. All rights reserved.
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2. RDK Port Expander Assembly Instructions for PEX 8509RDK
1) Uninstall PCI Express Bracket from the PEX 8509RDK (remove two screws).
2) Install five 0.50” nylon stand-offs, using the provided 3/16”, 4-40 screws. Stand-
offs should be mounted on the bottom of the PEX 8509RDK with the screws
screwing in from the top of the board. (Mounting hole locations are highlighted in
blue).
3) Lay the PEX 8509RDK and the RDK Port Expander down on a bench near the
desired test system.
4) Change the PEX 8509RDK’s SW3 (STRAP_PORTCFG[1:0]) DIP switch from 1:
HIGH, 2: HIGH to 1: LOW, 2: LOW.
5) Plug the RDK’s card edge (P1) into the straddle-mount connector of the RDK
Port Expander (J3)
6) Connect one end of x1 PCI Express cable into the RDK Port Expander card, and
the other into the PCI Express x1 cable adapter.
7) Plug in power into the PEX 8509/8505 ATX HD connector (J5) and the RDK Port
Expander ATX HD connector (J2).
8) Plug PCI Express x1 cable adapter card into an unpowered PCI Express PC slot.
9) Apply power the RDK/RDK Port Expander, before applying power to the host PC.
Figure 2-1. PEX 8509RDK Mounting hole location
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