At least we did end up standardising many things on IEC C8 (figure-8 socket on all sorts of low-amperage, non grounded devices) and IEC C14 socket (on computers

At least we did end up standardising many things on IEC C8 (figure-8 socket on all sorts of low-amperage, non grounded devices) and IEC C14 socket (on computers, servers, etc.) and quite a lot of equipment is tolerant of either 110V/60Hz and 230V/50Hz systems.