ZTE Router Modification Added two antenna ports for external support. Programming Installed a special firmware that I programmed and modified. I only install it on my own devices. Advantages of the special firmware over the public one: The public one is exposed to companies and they can restrict it over time. If it leaks, they cannot detect it, and the speed remains high and stable. Device Cleanliness Due to extensive modification, disassembly, and programming, the device has scratches. But don't mind the external appearance; it's excellent for use and has no faults or problems. Price: 200