Peripheral Component Interconnect

expansion bus

computer expansion bus standard

local computer bus for attaching hardware devices

computer hardware interface

thumb|250px|A size comparison of an mSATA SSD (left) and an M.2 2242 SSD (right)

PCI-X, short for Peripheral Component Interconnect eXtended, is a computer bus and expansion card standard that enhances the 32-bit PCI local bus for higher bandwidth demanded mostly by servers and workstations. It uses a modified protocol to support higher clock speeds (up to 133 MHz), but is otherwise similar in electrical implementation. PCI-X 2.0 added speeds up to 533 MHz, with a reduction in electrical signal levels.

ExpressCard, initially called NEWCARD, is an interface to connect peripheral devices to a computer, usually a laptop computer. The ExpressCard technical standard specifies the design of slots built into the computer and of expansion cards to insert in the slots. The cards contain electronic circuits and sometimes connectors for external devices. The ExpressCard standard replaces the PC Card (also known as PCMCIA) standards.

thumb|300px|A 3U CompactPCI backplane with J2 (top) and J1 (bottom, with blue key in the middle) connectors. The 32-bit PCI bus is carried on the J1 connector, while the J2 connector pins pass through to another connector on the back. CompactPCI is a computer bus interconnect for industrial computers, combining a Eurocard-type connector and PCI signaling and protocols. Boards are standardized to 3U or 6U sizes, and are typically interconnected via a passive backplane. The connector pin assignments are standardized by the PICMG US and PICMG Europe organizations. The connectors and the electrica

family of form factors for graphics cards in laptops

thumb|SSDs with U.2 interface

PCI-SIG, or Peripheral Component Interconnect Special Interest Group, is an electronics industry consortium responsible for specifying the Peripheral Component Interconnect (PCI), PCI-X, and PCI Express (PCIe) computer buses. It is based in Beaverton, Oregon. The PCI-SIG is distinct from the similarly named and adjacently-focused PCI Industrial Computer Manufacturers Group.

Laboratory instrumentation hardware platform

type of computer hardware interrupt

PICMG, or PCI Industrial Computer Manufacturers Group, is a consortium of over 140 companies in the fields of computer science and engineering. Founded in 1994, the group was originally formed to adapt PCI technology for use in non-desktop, high-performance telecommunications, military, and industrial computing applications, but its work has grown to include newer technologies. PICMG currently focuses on developing and implementing specifications and guidelines for open standardsbased computer architectures from a wide variety of interconnects.

open standard interconnection for data centers

i/O memory management unit for graphics