I able to use it when connect to laptop but not wifi. Have called the
starhub and they said need to purchase another router to be able to use
so currently, i change back to my old one.
This cable modem does not have wifi capability. To use wifi with this modem, you need to connect it to a wireless router.
also for everytime you switch device connecting to the cable modem, you need to powercycle the modem for the WAN IP to be reassigned to the new device because the modem locks the MAC address of the device that was issued with WAN IP until a reboot is done.