Quote from: elite.mafia on August 12, 2013, 05:42:54 AM

I just received a Juiced Systems USB 3.0/2.0 13 (4x3.0, 9x2.0)
Your guide says it can run 6, but that is total bs!
I can run 3 MAX on this thing before I start getting more hardware errors than accepts. As soon as I plug in a 4th I get nonstop errors. Here is a picture from when I woke up this morning. The BAJ is a BFL Jalapeno

I had 5 plugged in. After messing around for a while, I finally got it to stop showing USB AMUx READ BUFFERING XXX EXTRA BYTES and have all of them mining correctly with 1% or less error rate. I had to reduce the number connected through this hub to THREE before the errors went away!

I have the same exact hub and the same exact issue. The power supply specs are as advertised, and it ran 5 for a while without errors (never tried 6). After a few days I was only able to run 3, then after another day or so that changed to 2; I've been running 2 for a few days without incident. I will be returning it as soon as I receive the new hubs I ordered, but in the meantime I will experiment with 2.0/3.0 ports both on the hub as well as the host to see if it makes any difference. As of now it's been running on a netbook running xubuntu 12.04 plugged directly into a 2.0 port.

Update: I tried plugging the hub into a 3.0 port on my Windows PC, and cgminer would not detect the devices at all. I also tried switching between the 2.0 and 3.0 ports on the hub and it made no difference. I opened up device manager and saw that it was constantly refreshing, with "Etron USB2 (HS) Hub" repeatedly disappearing and reappearing. I unplugged the hub and went to plug it back into my netbook when I noticed that, with the USB cable unplugged, the hub seemed to be receiving no power whatsoever; neither the LEDs on the hub nor the LEDs on the block erupters were lighting up. I tried plugging my tablet into the charging port and it didn't get any power. I then plugged the hub back into the netbook, removed the AC adapter from the hub, and it made no difference; it still ran 2 block erupters without error, which is quite surprising, especially since its a netbook.

TLDR: Power supply is completely dead. As far as I can tell the hub itself is fine.