well if you dont find in local market , why dont you make your own ?
it is simple . as you said you have 3 power chord left free ,
so cut at the neck of the cable of sata type , slice the 4 cables , and take any old IDE male connector from the old smps , cat it as well , but for this keep the cable as long as well , slice them , and join the wires
note , in ide power connector there are 4 pins , first 2 pins powers 5 volts and another two pind carry 12 volts , in between those 4 pins are nutral , only red and yellow , need to be taken care
, do it
it is simple . as you said you have 3 power chord left free ,
so cut at the neck of the cable of sata type , slice the 4 cables , and take any old IDE male connector from the old smps , cat it as well , but for this keep the cable as long as well , slice them , and join the wires
note , in ide power connector there are 4 pins , first 2 pins powers 5 volts and another two pind carry 12 volts , in between those 4 pins are nutral , only red and yellow , need to be taken care
, do it