Dynabook Tecra PT591A-0VW016 Sierra LTE Modem Driver 7.78.5102.0601 for Windows 10 64-bit Nov 17, 2021
... the files needed for installing the LTE Modem driver. If it has been installed, updating (overwrite-installing) may ... highly recommended to always use the most recent driver version available. Try to set a system restore point before installing a device driver. This will help if you installed an incorrect or mismatched driver. Problems can arise when your hardware device is ...