# Displaying board product types

When specifying board configuration information in a system configuration file, you must supply the product type for each board. The product type is a string that identifies the board type to NMS OAM.

Different board plug-ins support different board types. To determine what strings to specify for your boards, you can query NMS OAM for the board types supported by the installed plug-ins. For example:

oamcfg -c?

oamcfg returns a list of supported board types, in alphabetical order. Each listed product type is a valid string that you can use to identify the products in the system configuration file.