I'll be making up dual mode rated power cables for modular Corsair and EVGA supplies, I have a pile of them becoing redundant as my gpus get sold off... If anyone wants some? Plug straight in to psu. 650W+ needed for 10 miners, 1000 for 15, 1300 will run 20 in dual mode. You must specify corsair OR evga, they aren't interchangeable, not without letting magic smoke out of your gridseeds anyway.
prices below for average lead length of 50cm, you can pick you own lengths. If you don't specify, they'll be staggered. 30, 42, 55, 67cm Extra length $1.5 per m
4x gridseed - modular supply: $12
2x 5V hub + poweron lead (modular ATX plug with built in 'paperclip' trick) $7
as above with 4x 5V hub $11
+ delivery from UK, bitcoin or bank transfer.
give me a week or two and I'll have Pis turning on ATX supplies.
No problem ... will note you up for 30 miners only I suppose ...