Dell XPS H233, XPS H266 manual System Board, Main Memory

System Board

The subsections that follow provide service-related information about system board components.

mouse connector

(MOUSE)SEC cartridge connector (SLOT 1)

keyboard connector (KEYBRD)

USB connectors (USB)

serial port connector (SER1)

parallel port

connector (PARALLEL)

integrated audio controller jacks

(LINE OUT, LINE IN, and MIC IN)

MIDI/game port (GAME/AUDIO)

CD-ROM drive audio cable connector (CDROM)

PCI expansion-card connectors (PCI1, PCI2, PCI3, and PCI4)

ISA expansion-card connectors (ISA1, ISA2, and ISA3)

	3.3-V power
power input connector	input connector
(POWER)	(J7M1)

battery socket (BT9M1)

microprocessor fan connector (J8L1)

primary EIDE channel connector (PRI IDE)

diskette-drive interface

connector (FLOPPY)

secondary EIDE channel connector (SEC IDE)

control panel connector (J9D1)

SCSI hard-disk drive access indicator cable connector (J8D1)

system board jumpers

wave-table upgrade connectors (J7C1 and J7D1)

SIMM sockets

(J6J1, J6J2, J7J1, and J7J2)

Figure 1-10. System Board Features

Main Memory

The four SIMM sockets can accommodate one or two pairs of EDO SIMMs. The base configuration for main memory is one pair of 16-MB nonparity SIMMs installed in sockets J6J1 and J6J2. Main memory can be expanded using pairs of 16- or 32-MB SIMMs. The SIMMs within each pair (J6J1 and J6J2 or J7J1 and J7J2) must be the same capacity and parity type, but the two pairs need not match each other.

The system’s ECC support, which is built into the system board, corrects single- bit errors and detects all multiple-bit errors. To use the ECC support, all installed SIMMs must be parity SIMMs.

System Overview 1-13