EMC QLogic Installation Guide download pdf (Page 22)

EMC Fibre Channel and iSCSI with QLogic Host Bus Adapters in the Windows Environment

Installation and Configuration

of the HBA. Inserting a 3.3v HBA into a 5v slot would cause severe

damage to both the HBA and the server. Therefore, the slot keys

denote the type of voltage provided by the slot and effectively

prevent a voltage incompatible HBA 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

Figure 3 on page 21 shows the HBA edge connecters compatible with

the PCI slots shown in Figure 1 on page 17. Note HBA #5 which

shows a universal HBA edge connecter. Universal HBAs are

compatible with both 3.3v and 5v PCI slots.

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EMC QLogic Installation Guide Page 22