https://occ-intl-prod.oss-ap-southeast-1.aliyuncs.com/resource//1699268369347/XuanTie-C908-UserManual.pdf
EN usermanual - update 20231106

https://occ-oss-prod.oss-cn-hangzhou.aliyuncs.com/resource//1708231018770/%E7%8E%84%E9%93%81C908R1S0%EF%BC%88xrvm%EF%BC%89%E7%94%A8%E6%88%B7%E6%89%8B%E5%86%8C_20240218.pdf
CN usermanual - update 20240218