RISER CARD

A circuit board that connects directly into the computer motherboard and provides the ability for additional expansion cards to be added to the computer. Riser boards were used with LPX motherboards and today are rarely used with the introduction of ATX motherboards that allow expansion cards to be connected directly to the computer.

Circuit board, sometimes also referred to as a riser board, that connects directly into the computer motherboard and allows additional cards to be connected into it. The riser cards were found on LPX motherboards used in desktop and some tower models. Today, newer motherboards, such as the ATX and NLX standards, are replacing older motherboards and no longer utilizing the riser card technology and instead placing the slots directly onto the motherboard allowing easy accessibility within the case. ATX The ATX (for Advanced Technology Extended) form factor was created by Intel in 1995. It was the first big change in computer case and motherboard design in many years. ATX overtook AT completely as the default form factor for new systems. ATX addressed many of the AT form factor's annoyances that had frustrated system builders. Other standards for smaller boards (including microATX, FlexATX and mini-ITX) usually keep the basic rear layout but reduce the size of the board and the number of expansion slot positions. In 2003, Intel announced the new BTX standard, intended as a replacement for ATX. As of 2007 the ATX form factor remains the industry standard for do-it-yourselfers; BTX has however made inroads into pre-made systems, being adopted by computer makers like Dell, Gateway, and HP. The official specifications were released by Intel in 1995, and have been revised numerous times since, the most recent being version 2.2,released in 2004.

LPX motherboard
Low-Profile EXtended motherboard A low-profile PC motherboard for slimline cases, introduced in 1997 by Western Digital. Unlike boards for desktop and tower cases that hold the expansion cards perpendicular to the board, cards plug into a riser card on the LPX and are parallel with the board. Having a 9" width, the Mini LPX version decreased the length from 13" to 11".

NLX motherboard
New Low-Profile Extended motherboard-A low-profile PC motherboard from Intel for slimline cases, introduced in 1987. Unlike boards for desktop and tower cases that hold the expansion cards perpendicular to the board, cards plug into a riser card on the NLX and are parallel with the board.