Dell Dimension 2100 System Reference Manual page 28

Architecture
Memory sockets
Memory capacities
1
Minimum memory
1
Maximum memory
Frequency
Clock cycle
CAS latency
SPD revision
Buffering
Voltage
Data bus width
BIOS address
1
Video memory uses 1 or 2 MB of system memory (RAM). Total RAM reported is 1 or 2 MB less than RAM installed.
2
Up to 11 MB of system memory may be allocated to support DVMT Graphics.
Drives
Externally accessible
Internally accessible
Ports
Externally accessible
Serial (DTE)
Parallel
Video
PS/2-style keyboard
PS/2-compatible mouse
USB
Internally accessible
Primary IDE
Secondary IDE
Floppy drive
Video
non-ECC SDRAM 168-pin modules
two; gold contacts
64, 128, 256, and 512 MB
64 MB for Microsoft® Windows® 98, Windows Millennium Edition (Me), and Windows 2000;
128 MB for Windows XP
512 MB
100 MHz
NOTE: Your computer may have either PC 100 or shared
100 MHz installed. Do not mix these two module types in the computer. To see which
memory type is installed in your computer, inspect the label on the memory module.
10 ns (supports four clocks only)
three
1.2
unbuffered
3.3 V
64 bits
F0000h
one 5.25-inch bay and two 3.5-inch bays
one bay for 1-inch-high IDE hard drive
9-pin connector; 16550C-compatible
25-hole connector (bidirectional)
15-hole connector
6-pin mini-DIN connector
6-pin mini-DIN connector
two USB-compliant connectors
40-pin connector on PCI bus
40-pin connector on PCI bus
34-pin connector
2
PC 133-SDRAM modules at