EMC P/N 300-002-803 manual Pci Pci-X

Installation Steps

Servers have several different bus slot types for accepting adapters:

◆PCI

◆PCI-X

◆PCI-X 2.0

◆PCI-Express

PCI slots can be 32-bit and 64-bit (denoted by their 124-pin or 188-pin connectors.) These slots have plastic "keys" that prevent certain adapters from fitting into them. These keys work with the cutout notches in the adapter edge connector so that only compatible adapters will fit into them. This is done because of the voltage characteristics of the adapter. Inserting a 3.3v adapter into a 5v slot would cause severe damage to both the adapter and the server. Therefore, the slot keys denote the type of voltage provided by the slot and effectively prevent a voltage incompatible adapter from being inserted.

Figure 2 shows how PCI slots will appear with their keys and what type of voltage is provided for each slot type.

Figure 2 PCI slot types and voltage key locations

Installing the adapter

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