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1 HP A7173A Adapter Overview
This chapter provides an overview of the features and capabilities of the A7173A adapter:
• “About the A7173A Adapter” (page 11).
• “The A7173A PCI-X Dual Channel Ultra320 SCSI Host Bus Adapter” (page 11).
About the A7173A Adapter
The HP A7173A Dual Channel PCI-X Ultra320 SCSI Host Bus Adapter (A7173A adapter) provides
two Ultra320 SCSI Parallel Interface Specification-4 (SPI-4) interfaces to PCI computer systems.
The A7173A adapter is a PCI-X adapter capable of up to 133 MHz, 64 bit data transfers. It supports
connection of up to 15 SCSI devices per channel, or a total of 30 SCSI devices per adapter.
The A7173A adapter provides synchronous or asynchronous 16-bit (Wide) Low Voltage Differential
(LVD) or 16-bit (Wide) Single-Ended (SE) SCSI solutions, using only one PCI slot. The adapter is
backward compatible, supporting Ultra160, Ultra2, Ultra, and Fast SCSI devices.
The A7173A adapter cannot be connected to FWD (HVD) devices. Consult with your
Hewlett-Packard representative for information on specific system configurations.
For a detailed summary of A7173A adapter features and specifications, see Appendix B (page 71).
Figure 1-1 The A7173A PCI-X Dual Channel Ultra320 SCSI Host Bus Adapter
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Channel B 68 Pin External VHDCI Connector
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Channel A 68 Pin External VHDCI Connector
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Channel B 68 Pin Internal HD Connector
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Channel A 68 Pin Internal HD Connector
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PCI-X Bus Edge Connector
About the A7173A Adapter 11