[sangd]

If you have set up the board for a single purpose and let it run, I think it may last for some time. I constantly switching different SD cards for different OSes with different configuration and software updates. Maybe that would result in something different from you guys? My soldering problem is visible through bare eyes. What RPi should have done is to design a complete system from power supply, USB hubs/dongles, video adapters, wifi/bluetooth adapters. I went through a bunch of them and it got me really frustrated trying different USB hubs/power supplies (1 works out of 4 hubs), and I am not sure the reason why (I got 3 external power supply on 3 out of 4 hubs).