i took an old psu out of a dead pc and wala magic, everything fires up, my new expensive psu was the problem, thx for your help

i dont think it is the hub, same outcome using two different 49hubs on different pcs, no daisy chain, was plugged in by itself, both my pcs i have tried will run multiple daisy chained 10 port hubs and all the bes i want to plug in, but the 49hubs will only run 3be, psu is new and working but i will get another and try, that is the only thing left to try

i have confirmed all be's are mining, all 49 ports are working, i can put 3 be one at at time in any of the 49 ports and they mine, as soon as i put in the fourth it wont work, i have tried on two seperate 49 port hub, i have tried on bfgminer and bitminter with same results, same pc is now running 22be on multiple smaller hubs, psu is brand new has 5v30a

my 49 port usb hub will only run 3 block erupters, when i put in the fourth block erupter it causes errors, i have tried 2 different 49porthubs and i get the same, i dont know what is wrong can anybody give guidance, i am using corsair 750tx power supply