BIOS BIOS UPDATE UTILITY
3-46
IRQ Interrupt Request.
KVM
Keyboard, Video, and Mouse – an attachment that mimics those devices, and connects
them to a remote I/O user.
LAN Local Area Network.
LED Light Emitting Diode.
LRDIMM
Load Reduced DIMM memory modules have buffer registers for both address and data
between the SDRAM modules and the system's memory controller.
MCA Machine Check Architecture.
MCE Machine Check Exception.
MMIO Memory Mapped I/O.
MRC Memory Reference Code.
MSR Model Specific Register.
NIC Network Interface Card.
NM Node Manager – now “Intel® Intelligent Power Node Manager”.
NMI Non-Maskable Interrupt.
OEM Original Equipment Manufacturer.
OS Operating System.
PCH Platform Controller Hub.
PCI
Peripheral Component Interconnect, or PCI Local Bus Standard – also called “Conven-
tional PCI”.
PCIe
PCI Express* -- an updated form of PCI offering better throughput and better error man-
agement.
PCR Platform Configuration Register.
PECI Platform Environmental Control Interface.
PEI
Pre EFI Initialization. Component of Intel® Platform Innovation Framework for EFI archi-
tecture.
PERR Parity Error.
PIC Programmable Interrupt Controller.
PMI Platform Management Interrupt.
PnP Plug and Play. Used as “PnP BIOS” and “PnP ISA”.
POST
Power On Self Test – BIOS activity from the time on Power On until Operating System
boot begins.
PXE Pre-execution Environment.
QPI Intel® QuickPath Interconnect.
RAID
Redundant Array of Inexpensive Disks – provides data security by spreading data over
multiple disk drives. RAID 0, RAID 1, RAID 10, and RAID 5 are different patterns of data on
varying numbers of disks to provide varying degrees of security and performance.
RAS Reliability, Availability, and Serviceability.
Table 39: Terminology (Continued)
Term Description
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