Short for New Low Profile Extended, NLX is a motherboard form factor originally developed by Intel and first finalized March 1997. The NLX motherboard was designed to replace the nonstandard LPX design and is 9" wide x 13.6" deep maximum to 8" x 10" deep minimum and included the below features.
- The NLX form factor uses a riser board (backplane), which the motherboard plugs into instead of being on the motherboard. This allowed the motherboard to be removed from the computer without having to remove all expansion cards and supported motherboards that can be removed without using tools.
- Support for the Pentium II
- Support for AGP
- Support for USB.
- Support for DIMM.
- Easier Access to internal components
As you can see in the picture below, this motherboard is easy to identify because of the gold backplane connection found at the side of the motherboard. In the example picture below this connector is found on the left-side of the motherboard.