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Chapter 3
Connector and LED Information
Disk Drive Power Connector
When to Use the Disk Drive Power Connector
Disk Drive Power Connector Installation
The power available on the disk drive power connectors in a computer can vary. For
Note
example, consider using a disk drive power connector that is not in the same power chain
as the hard drive.
M Series User Manual
(NI PCIe-625x Devices Only)
hard drive connector on PCI Express devices that, when connected,
increases the current the device can supply on the +5 V terminal.
M Series PCI Express devices without the disk drive power connector
installed perform identically to other M Series devices for most
applications and with most accessories. For most applications, it is not
necessary to install the disk drive power connector.
However, you should install the disk drive power connector in either of the
following situations:
•
You need more power than listed in the device specifications
•
You are using an SCC accessory without an external power supply,
such as the SC-2345
Refer to the specifications document for your device for more information
about PCI Express power requirements and power limits.
Before installing the disk drive power connector, you must install and set
up the M Series PCI Express device as described in the DAQ Getting
Started Guide. Complete the following steps to install the disk drive power
connector.
1.
Power off and unplug the computer.
2.
Remove the computer cover.
3.
Attach the PC disk drive power connector to the disk drive power
connector on the device, as shown in Figure 3-1.
The disk drive power connector is a four-pin
3-8
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