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I/O Upgrade
HP-HSC Upgrade
Secondary Expansion I/O Upgrade (Dual Bus) Procedures (K5x0 Only)
Perform steps 1 through 5 described in the “Primary Expansion I/O Upgrade Procedures,” then:
1. Remove the cover plate on the optional Processor/Dual Bus HP-HSC Expansion I/O slot next to the primary
HP-HSC Expansion I/O slot (see Figure 1-5) by loosening the two (one top and one bottom) captive mounting
screws and pulling the cover plate away.
2. Remove the cover plate of the adjoining processor slot by loosening the two (one top and one bottom) captive
mounting screws and pulling the cover plate away. (This is necessary to gain access to the system board.)
3. Reach into the computer cabinet and remove the plastic dust cover from the HP-HSC expansion connector on
the system board.
4. Remove the plastic dust cover from the Dual bus Secondary HP-HSC Expansion I/OCard connector.
5. Align the Dual bus Secondary HP-HSC Expansion I/OCard into the card slot (See Figure 1-5) and slide it into
the computer.
6. When the card makes contact with the system board connector, press the edge of the card to fully seat the card
into the computer. Tighten the two captive screws to secure the expansion I/O card.
7. Replace the primary HSC extender cover plate and tighten the two captive mounting screws.
8. Reattach any cabling on the primary HSC extender.
If this completes the upgrade, proceed to Upgrade Verification. If additional HP-HSC cards need to be
moved or added, refer to Moving HP-HSC Cards.
Moving HP-HSC Cards
The following steps describe the procedure for swapping HP-HSC cards between the Core I/O card
Optional I/O slot and HP-HSC expansion card slots.
Perform steps 1 through 5 described in “Primary Expansion I/O Upgrade Procedures,” then:
1. Disconnect the interface cable from the bulkhead connectors.
2. Remove the Core I/O assembly (located next to the HP-PB card slots) by loosening the two captive screws at
the top and bottom, and pulling the assembly straight out.
3. Loosen the two captive mounting screws (one on each side, Figure 1-6, item 1) next to the card connector (on
the bulkhead).
Figure 1-6
Mounting Screw Location
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