This is for all Windows OS. If the chipset has part number R6795-XX on the one chip modem or both 11229-XX and RLVDL56DPF/SP R6785-XX or both 11235-XX and RHP56D/SP R6789-51 on the 2 chips modem, it is a HCF modem. If the chipset has part number R6793-XX, it is a HSF modem.
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