Dell OptiPlex GL Service Manual - Page 25

Table 1-5., Technical Specifications - ram

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Table 1-5. Technical Specifications (continued) System Clocks System clock 60 or 66 MHz (matches external processor speed) Diskette/communications ports 24 MHz from the system clock Memory Architecture 64-bit, noninterleaved DIMM sockets four DIMM capacities 16, 32, 64, and 128 MB, EDO ECC mode Standard RAM 16 MB Maximum RAM 512 MB BIOS address F000:0000h-F0000:FFFFh Drives Externally accessible bays . . . one 3.5-inch bay, dedicated to a 3.5-inch diskette drive; two 5.25-inch bays for half-height diskette drives, tape drives, or CD-ROM drives Internally accessible bays . . . . two hard-disk drive bays; one 1.6-inch-high and one 1-inch-high EIDE or SCSI hard-disk drive Ports Externally accessible: Serial (DTE two 9-pin connectors; 16550-compatible Parallel one 25-hole connector (bidirectional) Video one 15-hole connector (on add-in video card) PS/2-style keyboard . . . . . 6-pin mini-DIN PS/2-compatible mouse 6-pin mini-DIN NIC RJ45 connector USB two USB-compliant connectors Audio line in miniature audio jack Audio speaker out miniature audio jack Audio mike in miniature audio jack System Overview 1-17

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System Overview
1-17
System Clocks
System clock . . . . . . . . . . . . . .
60 or 66 MHz (matches external processor
speed)
Diskette/communications
ports . . . . . . . . . . . . . . . . . . . .
24 MHz from the system clock
Memory
Architecture . . . . . . . . . . . . . .
64-bit, noninterleaved
DIMM sockets . . . . . . . . . . . .
four
DIMM capacities . . . . . . . . . .
16, 32, 64, and 128 MB, EDO ECC mode
Standard RAM . . . . . . . . . . . .
16 MB
Maximum RAM . . . . . . . . . . .
512 MB
BIOS address . . . . . . . . . . . . .
F000:0000h–F0000:FFFFh
Drives
Externally accessible bays . . .
one 3.5-inch bay, dedicated to a 3.5-inch dis-
kette drive; two 5.25-inch bays for half-height
diskette drives, tape drives, or CD-ROM
drives
Internally accessible bays . . . .
two hard-disk drive bays; one 1.6-inch-high
and one 1-inch-high EIDE or SCSI hard-disk
drive
Ports
Externally accessible:
Serial (DTE) . . . . . . . . . . .
two 9-pin connectors; 16550-compatible
Parallel . . . . . . . . . . . . . . .
one 25-hole connector (bidirectional)
Video. . . . . . . . . . . . . . . . .
one 15-hole connector (on add-in video card)
PS/2-style keyboard . . . . .
6-pin mini-DIN
PS/2-compatible
mouse . . . . . . . . . . . . . . . .
6-pin mini-DIN
NIC . . . . . . . . . . . . . . . . . .
RJ45 connector
USB. . . . . . . . . . . . . . . . .
two USB-compliant connectors
Audio line in . . . . . . . . . . .
miniature audio jack
Audio speaker out . . . . . . .
miniature audio jack
Audio mike in . . . . . . . . . .
miniature audio jack
Table 1-5.
Technical Specifications
(continued)