Dell OptiPlex GX240 - Manual (Page 278)

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SCSI
Small computer system interface. A high-speed interface that can be used to
connect devices to a computer, such as hard drives, CD drives, printers, and
scanners. The SCSI can connect up to seven devices using a single controller.
Each device is accessed by an individual ID number on the SCSI controller’s
bus . See also LVD .
SDRAM
Synchronous dynamic random-access memory ( DRAM ). A type of DRAM used
on DIMMs . SDRAM is synchronized with the computer clock speed ,
operating at the same speed as the system bus .
sec
Second(s). A measurement of time.
Serial Port
An I/O port on your computer that transfers data sequentially, one bit at a
time. It uses either a 9-pin or a 25-pin, male subminiature-D connector,
typically to connect a device such as a modem or mouse. Also referred to as
a COM port . See also DCE and DTE .
Service Tag Number
A five to seven-digit alpha-numeric code located on a sticker on your Dell
computer. This code is programmed into your computer’s system setup by
Dell during the manufacturing process. Dell customer support applications
use the Service Tag to display all of the configuration and support history
information for your specific computer. See also Express Service Code . For
more information, see http://support.dell.com.
SIMM
Single in-line memory module. A slim circuit board containing RAM chips.
SIMMs can be plugged into sockets on the computer's system board to add
memory to the computer. Depending on the computer, SIMMs may need to
be installed in multiples of two or four. See also DIMM and RIMM .
SMART
Self-Monitoring And Reporting Tool. A standard for developing hard drives
and software systems that automatically monitors a hard drive's health and
reports potential problems. Ideally, this should allow you to take proactive
actions to prevent impending hard-drive failures.
SMBIOS
System management BIOS . A standard method by which the BIOS data of a
WfM -compliant computer can be accessed remotely.