BFGMiner won't detect ASIC USB???

[melwinder]

I don't know where to post this in, but can anyone help me I bought 3 Antminer U2 USB ASIC Miners (Picture 1) and only can get one out of three of them to work (picture 2) it would be much much appreciated if someone can help me or PM me or whatever.... I even tried to do "M +" and type in all sorts of things that could have worked, such as \\.\COM20 (19, 18, 5, etc when I put it into diff USB slots) and even antminer:all again, and antminer:\\.\COM____ but nothing won't work... They all show the red light, but when I run the miner, only one of the blue ones shows it blinking green...



Pic of the 3 USB Miners plugged into a Powered USB Hub



Picture of the BFGMiner detecting only one (AMU0), the .bat file, and the bfgminer folder I Have

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[melwinder]

bump, still need help if possible....

[Mister S]

That hub doesn't look like it has an external power source, so I'm betting it can't supply enough power to run three Ants at once. Try running two on it and see if it picks them up, if it doesn't, you'll have to buy a powered USB hub. For three at x0981, I'd say 5v, 1000mah just to have a little overhead.

The antminer overclocking thread also covers this in depth.

Cheers!

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[melwinder]

It does have a external power source:

"INPUT 50/60Hz 0.35A
OUTPUT 5V = 2A"

plugged into the wall, then the USB plugged in from the HUB to the back of my PC, I can only get 1 to 2 of the Miner's to work, here is my new configuration to get 2 out of the 3 to work:


bfgminer.exe  -S \\.\COM20 -S \\.\COM28 -S \\.\COM5 -S antminer:all

But yet, only 2 out of the 3 works, and some times only 1 out of the 3 works :/ Idk, it's the same dealio even if I tried plugging them straight into my PC ports....

It's like a hit and miss for some reason, lol, I've tried googling it so many times but can't figure it out...

[MTBmanTT]

Hi,

I recently just purchased a couple of these myself to run along side with my other USB miners.  Chances are its like a couple posts have mentioned- power.  I have a bi-fury at home that I fought with all day until I finally used a bench PSU and all problems were solved instantly. The ant miners I picked up seem no different, they are just hungry for power once you start hashing. 

Have you tried only running the two? do they both hit their target hash rate?

[HellDiverUK]

It does have a external power source:

"INPUT 50/60Hz 0.35A
OUTPUT 5V = 2A"

Nowhere near enough. 

Hubs that take 5V are no good.  I have a similar hub which won't run more than 5 Antminer U1, even when powered by a 750W ATX PSU.  You need a USB3 hub that runs off 12V.

[JustJeff]

You may already know:
The driver needs to be installed for each separate device plugged into the hub.