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Title: USB Hubs.... Post by: Byteme on September 23, 2013, 07:15:51 AM why is it that most USB hubs have more ports than they can provide power to?
What would happen if i hooked up a larger power supply to a hub, without going overboard, but enough to run all the ports on it. Could i damage the board or chips on the board cause its not using the power supply that came with it? Or because it has the ports it should be able to handle the extra power? Title: Re: USB Hubs.... Post by: uk1 on September 23, 2013, 07:57:23 AM Which USB hub to use with Block Erupters
https://bitcointalk.org/index.php?topic=253749.0;topicseen Title: Re: USB Hubs.... Post by: CoinURL on September 23, 2013, 08:49:28 AM Which USB hub to use with Block Erupters https://bitcointalk.org/index.php?topic=253749.0;topicseen Great list. The 13 port from WTCR is awesome! :) Title: Re: USB Hubs.... Post by: Byteme on September 23, 2013, 09:21:25 AM Uk1 Thank you very much!!
CoinURL, thank you for the positive review! That hub looks nice. Title: Re: USB Hubs.... Post by: flasket on September 23, 2013, 11:08:42 AM Hi Byteme,
Most USB hubs aren't designed for a lot of maximum load devices (which block erupters are). If you think about average computer users, they are more likely to have lower load devices plugged in - mice, keyboards, flash drives and so on, which aren't drawing anywhere near the 2.5W limit. So hub manufacturers design for a lot less than 2.5W per port. Also, in general, yes it's probably fine to supply more power to a hub, and then run more devices from it. That said, with the current bitcoin mining difficulty, a block erruptor is not earning a lot, and you are almost certain to spend more on a power supply than you will ever earn back... Title: Re: USB Hubs.... Post by: Byteme on September 25, 2013, 04:53:36 AM Hi Byteme, Most USB hubs aren't designed for a lot of maximum load devices (which block erupters are). If you think about average computer users, they are more likely to have lower load devices plugged in - mice, keyboards, flash drives and so on, which aren't drawing anywhere near the 2.5W limit. So hub manufacturers design for a lot less than 2.5W per port. Also, in general, yes it's probably fine to supply more power to a hub, and then run more devices from it. That said, with the current bitcoin mining difficulty, a block erruptor is not earning a lot, and you are almost certain to spend more on a power supply than you will ever earn back... Flasket, thank you very much for your explanation. Just the type of response I was looking for. As I am looking through page after page of hubs I notice most of them never have "enough" power per port. Your answer definitely makes sense, it still seems like these hardware companies that make USB hubs are cutting corners by not giving bigger power supplies. Anyways, thanks again for taking the time and give your response. |