Re:The new MacBook
by archagon on Monday March 09, 2015 @02:39PM
(#9172859)
I'm concerned about the feasibility of USB-powered hard drives with this setup. On my Macbook Pro, if I plug more than one of them into a hub (as opposed to separate USB ports), they start flaking out on account of lack of power, even if the hub is powered.
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Well, if the hub has enough power, supports USB-PD, and the drive supports USB-PD, then it should be able to draw up to 100W of power.
Then your hub is not doing a good job of providing the 500 mA that it supposed to give to devices, or your USB powered hard drive actually requires more than 500 mA to do its thing.
I believe my drives use 500mA each for power.
Make sure the power brick that your powered hub came with is capable of powering the N+ devices you have at the same time. Most of the 4 port hubs come with 2A power supplies, however sometimes they skimp on actually being able to deliver that power.