I just got 4G RBI (yay). It works great, up to 40 mb/s when downloading big video files.

However, I cannot get the wi-fi on the new gateway device to work. There is a nice strong signal but three different laptops running XP, Win 7 and 8.1 cannot establish a connection. Every time I try, Windows just says it cannot connect or the connection has failed but it does not provide any further information. When I run a diagnostic it says it cannot figure out what is wrong and I should ask a friend! Not exactly helpful in true Microsoft fashion but maybe it is because I guess that is what I am doing.

The gateway device is a brand new Huawei B315s-607. My ISP technician and I have spent hours on the phone trying to find a solution to this without success. The problem does not lie with the computers or the wireless link itself so it must be either a hardware fault or a setting error that has escaped us. I have tried disabling the security but it still won’t make a connection. Any help with this would be much appreciated.

On a completely different note, I have what is probably a dumb noob question. I see from the product specifications that the Ethernet port is 4 gigabit. I currently have Cat5 LAN cable installed and the usual 100 mb/s connection. Since my top download speed is about 40 mb/s, is there any benefit to be had from upgrading the cabling?