These covers are mostly used for Television wires, but they are also suitable for sockets, CPU and other electronic cables. Wires are always a real pain. Getting tripped on cables may even damage the wire itself, so the covers and not only good for you, but for the wires themselves.
Mount a power-surge protector strip under your workplace desk and keep the cords in a coated wire basket. Use key tags to organize all of those dangerous computer-printer-modem-speakers-notebook-monitor-etc plugs and wires that are no longer on the floor!