XINJE PLCs do not use a standard CDC (Communications Device Class) USB profile like a mouse or keyboard. Instead, they often use a proprietary interface or rely on older chipset drivers (often from Silicon Labs or a generic JTAG interface). When you plug a XINJE XC or XD series PLC into a Windows 10 or 11 PC, the operating system sees a new device but does not have the appropriate .inf (Setup Information) and .sys (Driver System) files in its native library.