An original equipment manufacturer (OEM) makes equipment or components that are then marketed by its client, another manufacturer or a reseller, usually under that reseller's own name. An OEM may make complete devices or just certain components, either of which can then be configured by the reseller.

The OEM has their own quality control, testing facilities and state of the art equipment. Unlike us, they do and produce things instead of ranting and yakking about things many do not understand.