Dell OptiPlex GX1p - Manual (Page 6)

System Board and Riser Board Labels
Table 2 lists the labels for connectors and sockets on your system board and riser board, and it gives a brief description of their functions.
Table 2. System Board and Riser Board Connectors and Sockets
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BIOS Reserved (do not change).
BUS66M Reserved (do not change).
266MHZ* Reserved (do not change).
300MHZ* Reserved (do not change).
333MHZ* Reserved (do not change).
350MHZ* Reserved (do not change).
400MHZ* Reserved (do not change).
450MHZ* Reserved (do not change).
500MHZ* Reserved (do not change).
* The correct microprocessor speed is automatically detected and set by the system. Do not change the settings of these jumpers.
The system can operate with a microprocessor speed up to 600 MHz.
NOTE: For the full name of an abbreviation or acronym used in this table, see the Glossary in your online System User's Guide.
jumpered unjumpered
Connector or Socket Description
AMC ATI multimedia channel
BATTERY Battery socket
CD_IN CD-ROM audio interface connector
DIMM_x DIMM socket
DSKT Diskette/tape drive interface connector
ENET NIC connector (optional)
FAN Microprocessor fan connector
HDLED Hard-disk drive LED connector (on riser board)
IDEn EIDE interface connector
INTRUSION Chassis intrusion switch connector
ISAn* ISA expansion-card connector (on riser board)
KYBD Keyboard connector
LINE-IN Audio line-in jack
LINE-OUT Audio line-out jack (amplified source)
MIC Microphone jack
MONITOR Video connector
MOUSE Mouse connector
P1 Wakeup On LAN power connector (on riser board)
PANEL Control panel connector
PARALLEL Parallel port connector; sometimes referred to as LPT1
PCIn* PCI expansion-card connector (on riser board)
POWER_1 Main power input connector
POWER_2 3.3-V power input connector
RISER Riser board connector
SERIALn Serial port connectors
SLOT1 Pentium II processor SEC cartridge connector
TAPI Telephony connector