Dell Precision 620 - Manual (Page 69)

I/O Ports and Connectors
The I/O ports and connectors on the back panel of your computer are the gateways through which your computer system communicates with
external devices, such as a keyboard, mouse, printer, and monitor. Figure 3 identifies the I/O ports and connectors for your system.
Figure 3. I/O Ports and Connectors
KYBD/MOUSE Keyboard connector and mouse connector (stacked)
LAN Wakeup On LAN card connector
LINE-IN Audio line-in jack
LINE-OUT Audio line-out jack
MEC_A MEC socket (channel A)
MEC_B MEC socket (channel B)
MIC Microphone jack
PANEL Control panel connector
PARALLEL/SCSI Parallel port connector (sometimes referred to as LPT1) and SCSI connector (stacked)
PCI1, PCI2, PCI3, PCI4 32-bit PCI expansion-card connectors
PCI5, PCI6 64-bit PCI expansion-card connectors
MT PWR1 Main power input connector
MT PWR2 Main power input connector
RAID Optional RAID PCI expansion card connector extension
SCSI_NARROW Secondary SCSI connector
SCSI_ULTRA2 Primary SCSI connector
SERIAL1/2 Serial port connectors (sometimes referred to as
COM1 and COM2; stacked)
S2_PRI
Primary Intel
®
Pentium
® III Xeon™ microprocessor SEC cartridge connector
S2_SEC Secondary Pentium III Xeon processor SEC cartridge connector
TAPI TAPI input card connector (voice modem to audio system interface)
USB USB connectors
WUOL Wake-Up on LAN connector
NOTE: For the full name of an abbreviation or acronym used in this table, see the Glossary .
1 Parallel port connector 8 Diagnostic LEDs (See Messages and Codes .)
2 Serial port 1 connector 9 Audio line-in jack
3 Mouse connector 10 Audio line-out jack
4 Keyboard connector 11 Microphone jack
5 USB connectors 12 Serial port 2 connector
6 Video connector (may be in first or second expansion slot) 13 External SCSI connector
7 NIC connector