Dear Kevin_Z, Thank you for your help!!! I have not bought the USB 4G yet. I still find the solution for this problem, make sure my TL-MR3020 can work with USB 4G. If there is nothing certain, I...

Hi, I have one TL-MR3020 v1, firmware version 3.17.2 Build 140610 Rel.65031n. I am using it with USB 3G Huawei E303 and it works quite well. However, you know, the 3G speed is slow and I wanna change...