HP Visualize J5000 Supplementary Manual page 39

Product Information
Internal Components
Power Supply
Although the power supplies in the J5xxx and J7xxx look the same, their power outputs,
weight, and the number of bus bars connecting them to the system board are different.
The power supply in the J5xxx supplies 830 Watts of power to the workstation, weighs
approximately 14 pounds, and is connected to the system board by three gold plated bus
bars over the center wall of the chassis. In contrast, the power supply in the J7xxx supplies
1,350 Watts of power, weighs approximately 17 pounds, and is connected to the system
board by four gold plated bus bars. Both the J5xxx's and the J7xxx's power supply has two
internal cooling fans.
I/O Board
The I/O board is mounted on the center wall of the workstation chassis, partially behind
the power supply. Over the center wall of the chassis, the I/O board is attached to the
workstation's system board by a flex cable. The I/O board, which is the same in both the
J5xxx and J7xxx, has connections to the Serial, LAN, USB, Parallel, SCSI, and audio
built-in I/O.
The I/O board also has 64-bit slots for PCI (Peripheral Connect Interface) cards, providing
I/O expansion capabilities for the workstations. There are five PCI-2X slots at 5V and
33 MHz each, and two PCI-4X slots at 3.3V and 66 MHz each. Slot 1 is reserved for power
only; an I/O card should not be installed in slot 1.
SCA Hard Disk Interface
The SCA (Single Connector Attach) hard disk interface (also known as the backplane
board) is mounted on the back of the hard disk drive bays in the J5xxx and J7xxx. The
SCA hard disk interface is connected to the I/O board by an Ultra2 Wide LVD (Low Voltage
Differential) SCSI ribbon cable.
I/O Cooling Fan
The I/O cooling fan is located in the fan/speaker mounting bracket in the bottom of the
front, right side of the workstation. This fan draws air flow from the front of the
workstation inward to cool PCI cards that are inserted into the I/O slots on the I/O board.
Speaker
The speaker is mounted within a bracket assembly with the I/O cooling fan. The speaker
has 16-bit, 44 kHz CD ROM-quality sound.
Chapter 1 33