Hello, USB CDC Host is driverless solution for using USB connection , like RS232C  connection. http://support.symbol.com/support/search.do?cmd=displayKC&docType=kc&ex…   I followed the process in above URL page. But it doesn't work (no pop-up)  with 6708,6707 from myside. (3 x Korean XP laptops  had same problem.) Any body can try to verify this function with your localized OS ???? Best Reards. Jaehoon -