Tangled patch leads, no labels and hot equipment make faults slower to fix. Here are the warning signs and what a tidy-up involves.

Mesh kits and wired access points both promise whole-building Wi-Fi. Here is how they differ and when each makes sense.

A simple way to work out how many network points your office needs, with a little spare for growth.

What cable certification is, why it matters for warranties and hidden faults, and when you should have it done.

Dropouts and dead spots are rarely your broadband's fault. The real causes of patchy Wi-Fi and the fix that lasts.

Cat6 or Cat6a? A plain-English guide to speeds, distances, cost and which cable suits your home or office.