Dell OptiPlex GX240 - Manual (Page 275)

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PIO
Programmed input/output. A method of moving data between devices in a
computer in which all data passes through the microprocessor . The most
recent ATA / IDE standard specifies higher data transfer rates, mode 3 at 11.1
MBps and mode 4 at 16.6 MBps. A recent alternative to PIO is DMA .
Plug and Play
Often referred to as Plug-n-Play or PnP . A technology that can automatically
configure devices at start-up to use or share certain IRQs . For this to work
properly the computer’s BIOS and OS must both support PnP, and all devices
being configured must also be PnP-compliant. PCI devices are PnP-
compliant.
PME
Power management event. An event that causes a computer to be remotely
started, such as Remote Wake Up ( WOL ) or WOR .
PnP
See Plug and Play .
Port
A socket or plug on your computer that allows you to attach an external device
by connecting its cable. See also Parallel Port and Serial Port .
POST
Power-on self-test. Diagnostic programs, loaded automatically by the BIOS
during start-up, that perform basic tests on the major computer components,
such as RAM , the hard drives, the keyboard, video, and so on. If there are no
problems during the POST, the computer continues the start-up and loads
the OS .
Product ID
Also referred to as Product Key . See COA .
Product Key
Also referred to as Product ID . See COA .
PS/2
Personal System/2. A mini-DIN connector on your computer that is typically
used to connect keyboard or mouse cable connectors.