Datasheet

Technical Reference
57
2.8 Connectors
CAUTION
On the Desktop Board D875PBZ, only the following connectors have overcurrent protection:
• Back panel USB and PS/2
• Front panel USB
The other internal connectors of the Desktop Board D875PBZ are not overcurrent protected and
should connect only to devices inside the computer’s chassis, such as fans and internal
peripherals. Do not use these connectors to power devices external to the computer’s chassis. A
fault in the load presented by the external devices could cause damage to the computer, the
interconnecting cable, and the external devices themselves.
The connectors are described on the following pages and are divided into these groups:
• Back panel I/O connectors (see page 58):
 PS/2 keyboard and mouse
 USB
 Serial port A
 Parallel port
 LAN
 Audio
• Internal I/O connectors (see page 60):
 Audio (auxiliary line input, front panel audio, and ATAPI-style CD-ROM)
 Fans
 Power and hardware control
 PCI add-in boards
 AGP add-in board
 Parallel ATA IDE
 Diskette drive
 SCSI hard drive activity LED
 Serial ATA/Serial ATA RAID
• External I/O connectors (see page 68):
 Front panel audio
 Front panel USB
 Front panel (power, sleep, and message-waiting LED; power switch; hard drive activity
LED; and reset switch)
 Auxiliary front panel power, sleep, and message-waiting LED