Dell PowerEdge 2550 - Manual (Page 17)

SCSI Backplane Board Connectors
Figure A -4 shows the location of the connectors on the back of the small computer system interface (SCSI) backplane board.
Figure A-4. Connectors on the SCSI Backplane Board
Figure A -5 shows the connectors and sockets located on the interposer board.
Figure A-5. Connectors on the Interposer Board
Disabling a Forgotten Password
The system's software security features include a system password and a setup password, which are discussed in detail in "Using the System Setup Program"
in the User's Guide. A password jumper on the system board enables these password features or disables them and clears any password(s) currently in use.
To disable a forgotten system password or setup password, perform the following steps.
1. Turn off the system, including any attached peripherals, and disconnect the system from the electrical outlet.
2. Open the system doors (see " Opening the System Doors " in "Checking Inside the System").
NICn NIC connectors
PANEL System control panel connector
PARALLEL Parallel port connector; sometimes referred to as LPT1
POWERn Power connectors
PROC_n Microprocessor connectors
RAID_KEY Socket for integrated RAID controller hardware key
RISER PCI riser board connector
SCSIA, SCSIB SCSI host adapter connectors
USBn USB connectors
VGA Video connector
VRMn Primary and secondary VRM connectors
NOTE: For the full name of an abbreviation or acronym used in this table, see " Abbreviations and Acronyms ."
WARNING: See "Protecting Against Electrostatic Discharge" in the safety instructions in the System Information document.