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RDRAM
Rambus
dynamic random-access memory (
DRAM
)
. A memory subsystem that
can optimally transfer up to 1.6 billion
bytes
of data per second. The
subsystem consists of
RAM
, the RAM controller, and the
bus
connecting
RAM to the
microprocessor
and other devices in the computer. See also
DRDRAM
.
Remote Wake Up
A standard of
WfM
that provides the ability either to remotely wake a
computer from a low-power sleep state or to remotely start a computer that
is turned off but connected to a power source. Remote Wake Up, typically
used to conserve power in large network organizations and to remotely
perform maintenance/configuration operations, must be supported by an
ACPI
-compatible computer. Additionally, to start by a network connection,
the
network adapter
must support
WOL
. To start by a telephone connection,
the
modem
must support
WOR
.
RIMM
Rambus
in-line memory module
. A slim circuit board containing
RDRAM
chips
. RIMMs are plugged into sockets on the computer's system board to
add memory to the computer. They typically must be installed in matched
pairs, meaning two sockets forming a pair must contain RIMMs of identical
capacity, number of RDRAM chips, and speed. See also
SIMM
and
DIMM
.
RJ45
A form of connector resembling a standard telephone jack that is typically
used to connect
Ethernet
and
Token Ring
network adapters
and cables.
Unlike a telephone jack, an RJ45 connector has eight wires instead of two,
four, or six.
ROM
Read-only memory
. Memory that stores data and programs that cannot be
deleted or written to by the computer. ROM, unlike
RAM
, retains its contents
even after you turn off your computer. Some programs essential to the
operation of your computer reside in ROM.
RS-232
A long-established standard describing the interface for
serial
data
communication between computers and related devices. See also
DCE
and
DTE
.
RTC
Real-time clock
. Battery-powered clock circuitry on the system board that
keeps the date and time after you turn off the computer.
Summary of Contents for OptiPlex GX50
Page 1: ...w w w d e l l c o m s u p p o r t d e l l c o m Dell OptiPlex GX50 Systems User s Guide ...
Page 10: ...x Contents ...
Page 40: ...38 Abo u t You r C o mp u t er w w w d e l l c o m s u p p o r t d e l l c o m ...
Page 113: ...Installing Upgrades 111 1 Floppy drive cable 2 Lever 1 2 ...
Page 117: ...Installing Upgrades 115 S ma l l D es k t op C om p u te r Small Mini Tow er Comput er ...
Page 136: ...134 Ins ta l l i n g Up g r a d es w w w d e l l c o m s u p p o r t d e l l c o m ...
Page 154: ...152 Microsoft Windows XP Features w w w d e l l c o m s u p p o r t d e l l c o m ...
Page 162: ...160 Te c h n ic a l Sp e c if ic a tio n s w w w d e l l c o m s u p p o r t d e l l c o m ...
Page 210: ...208 So lv ing Pr o ble m s w w w d e l l c o m s u p p o r t d e l l c o m ...
Page 232: ...230 Ge tt ing Help w w w d e l l c o m s u p p o r t d e l l c o m ...