Chapter 1
Overview
1-9
1.2
Card Slots
The card slots have the following characteristics:
■
An I/O boat has seven card slots. Slot numbers 0 through 6 are counted from left
to right.
■
Slot 0 is reserved for the link card. Slot 0 is the first slot in the left side of the I/O
boat. For information about link cards, see
Section 1.2.2, “Link Kits” on page 1-12
■
Slots 1-6 are for PCI cards. (PCI cards are sometimes known as host adapters or
host bus adapters.)
■
PCI card slots are hot-pluggable.
■
PCI-X and PCI Express sockets (
) are incompatible in length and height.
Installing a PCI-X or PCI Express card in the wrong type of I/O boat will damage
the card and the connector in the carrier slot.
■
The PCI Express I/O boat supports up to x8 card sockets. PCI Express x16 cards
are not supported in the PCI Express I/O boat.
Note –
Graphics cards are not supported.
Caution –
Do not insert a x16 PCI Express card in an I/O boat. The x16 card
connector is too large for the x8 card socket and will damage the socket.
1.2.1
Carriers
All PCI cards in the External I/O Expansion Unit are mounted on carriers
(
). Carriers control RFI emissions and maintain the proper flow of air
through the External I/O Expansion Unit.
The front of each carrier is labelled with its slot number (PCIX 1 or PCIE 1, and so
forth).
Note –
Slot 0 is reserved for the link card. This slot is marked LINK 0.
There is only one type of carrier design used in the External I/O Expansion Unit. The
same carrier fits all slots in both types of PCI-X and PCI Express boats. Carriers are
physically keyed to fit only specific slot numbers. The keys can be adjusted for other
slots as needed.
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