HP Dc7900 Service Reference Guide: HP Compaq dc7900 Business PC - Page 286

Appendix E, System Board and Riser Board Reference Designators, Double-stacked parallel port

Page 286 highlights

J42 J50 J51 J52 J53 J54 J55 J64 J65 J66 J67 J68 J69 J70 J71 J72 J73 J74 J75 J76 J77 J78 J80 J81 J82 J83 J101 J103 J105 J9020-J9029 J9030-J9034 JP49/E49 L1 L2 PCI Express x4 graphics slot First parallel port Second parallel port Double-stacked parallel port, Top = Port B, Bottom = Port A Parallel port over single Serial Port Parallel port over Serial Port and Video Port Parallel port over dual VGA ports Display port connector DVI connector Keyboard connector, PS/2 (Closest to power supply) Mouse connector, PS/2 Stacked mouse (Top)/keyboard (Bottom) connector Video connector, VGA Primary single USB connector Secondary single USB port Microphone jack Line-in jack Line-out jack Headphone jack Volume control Double-stacked headphone (Bottom)/microphone (Top) connector Double-stacked line-in (Top)/line-out (Bottom) connector Stacked serial/audio connector Primary double-stack USB, Top = Port 2, Bottom = Port 1 Secondary double-stack USB, Top = Port 4, Bottom = Port 3 Triple-stacked audio jack (line in, line out/headphone, microphone) Security board connector - for security card DC input power PCI Express MiniCard PCI slots on riser card PCI express slots on riser card Clear password header/jumper USB front port choke (1st) USB rear port choke (1st) 274 Appendix E System Board and Riser Board Reference Designators

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J42
J50
J51
J52
J53
PCI Express x4 graphics slot
First parallel port
Second parallel port
Double-stacked parallel port, Top = Port B, Bottom = Port A
Parallel port over single Serial Port
J54
J55
J64
J65
J66
J67
Parallel port over Serial Port and Video Port
Parallel port over dual VGA ports
Display port connector
DVI connector
Keyboard connector, PS/2 (Closest to power supply)
Mouse connector, PS/2
J68
J69
J70
J71
J72
Stacked mouse (Top)/keyboard (Bottom) connector
Video connector, VGA
Primary single USB connector
Secondary single USB port
Microphone jack
J73
J74
J75
J76
J77
Line-in jack
Line-out jack
Headphone jack
Volume control
Double-stacked headphone (Bottom)/microphone (Top) connector
J78
J80
J81
J82
J83
J101
Double-stacked line-in (Top)/line-out (Bottom) connector
Stacked serial/audio connector
Primary double-stack USB, Top = Port 2, Bottom = Port 1
Secondary double-stack USB, Top = Port 4, Bottom = Port 3
Triple-stacked audio jack (line in, line out/headphone, microphone)
Security board connector - for security card
J103
J105
J9020-J9029
J9030-J9034
JP49/E49
L1
DC input power
PCI Express MiniCard
PCI slots on riser card
PCI express slots on riser card
Clear password header/jumper
USB front port choke (1st)
L2
USB rear port choke (1st)
274
Appendix E
System Board and Riser Board Reference Designators