DW5804/HP lt2523/Novatel E371: How can I use WWAN on Mac High Sierra ? in Modems/WWAN modules Posted October 27, 2018 Hi everyone ! I need help. I have WWAN card is DW5804 this the same HP lt 2523 and Novatel E371. I have Mac High Sierra 10.13.5 and HP 8570p. I install Mac in 8570p, it working well, AMD card is working. But, I need using WWAN card with DW5804/ HP lt2523 in Mac ! But it isn't worrking ! I check in System Report in Mac, it not show in here ! I read other thread and I must use Legacy_Sierra_QMI.kext or CellPhoneHelper.kext ? And I dont know make that to work on 10.13 ! I dont know create port on USB for WWAN card because it not show on System Report ! :3 Can you help me ? Thank for any help.