Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Buggy and poor QA

I purchased this unit after trying the Wyflyer and it was easier to get running however the documentation is poor. The AC adapter failed after about 2 weeks of use and all contacts with D-Link support have been ignored. I can still use the unit via the USB power supply however it seems to get unreasonably hot which leads me to question how much power it is pulling from the USB adapter. I think it has fried one USB port already but can not conclusively prove it was this units fault. If I try to use the AC adapter built in the unit gets frying hot in seconds and never does finish the boot.