The O2 wireless box is fully guaranteed to work smoothly, and comes with a host of security features, like its built-in firewall, so it’s safer to go online on all your computers.
If you don’t want to set up wireless broadband in your home, no problem. You can use Ethernet cables (standard network cables) instead.
O2 wireless box II
wireless box III
Wireless coverage depends on factors including distance from wireless box and building construction.