CyAPI.libprovidesasimple,powerfulC++programminginterfacetoUSBdevices.Morespecifically,itisaC++classlibrarythatprovidesahigh-levelprogramminginterfacetotheCyUsb.sysdevicedriver.ThelibraryisonlyabletocommunicatewithUSBdevicesthatareservedby(i.e.matchedto)