The Siemens 6ES7658-8XX68-0YB8 is a SIMATIC PCS 7 Asia License Key USB Hardlock V9.1. It is designed for licensing projects with Asian characters and must be used in connection with a valid EU license. The product information is provided as a PDF on a USB Hardlock. Siemens offers a substitute: 6ES7658-8XX78-0YB8, which is the SIMATIC PCS 7 Asia License Key USB Hardlock V10.0.