I am trying to connect a USB Data card (intex dc21.6hwm) to Beagle Bone Black(BBB) with Linux kernel (Ver: 3.8.11). Un-fortunately the datacard didn’t respond/ failed to power-Up upon plug-in. The issue repeated with other data cards as well. No Usb Activity captured on lsusb & dmesg. So far hauwei datacard is the only working plug & play model identified. What can be the issue with other datacards. Any debug points/suggestions will be highly helpfull.