Is 20W enough power for 7 portable drives?
877314
In theory, no. Not according to the USB spec. If you run 7 USB 3.0 devices, and they all draw 900mA, then they will request 31W and only receive 20. In reality... very few devices will draw that much power... but know your devices or do the math
877315
I have used it with six devices and it works fine. Warning: Do not attempt to charge devices (cell phones, tablets, etc.)! It is not designed to charge devices.
2169747
I have a micro atx board, but is got a 420 watt power supply, I run 2 hard drives a one dvd drive.
642669
Each of 4-pin molex powers two hard drives. If you have 12 hard drives set up, then you need to connect all 6 of 4-pin molex. In term of power supply, typical consumer hard drive takes around 8 watt to run, 12 hdd x 8 watt = 96 watts total for 12 hard drives. I would add 20% overhead, so total power needed for 12 running hard drives is 115 watts.
2158456
I need to correct my last post about the "Power" portion of this item. It actually DOES NOT provide power to the drives, but rather, the fan on this rack. However, sinc you will need the power supply anyway...it is THAT that you will get your power source from for the drives.
2007749
Probably. I have six external hard drives, a dvd writer/player, an audio system, and I don't know how much more hooked up to it. I've never noticed a single problem with it, unlike every other USB Hub I've had, and there have many since I have so many external devices to hook up.
410951
Almost all 3.5" hard drives require more power(current >1.25A ) than what is defined by USB3.0 committee(standard=0.9A), no 3.5" hard drives please. Good to use with 2.5" hard drives or solid-state drives(SSD).
1968831
You shouldn't, but it depends on what else is on your machine. I have 3 hard drives and added this card, which only uses 110 watts, and it's working fine with a 500w PS. That's one reason I selected this card because of it's low power consumption.
754909
The Power rails on mine can't support more than one drive at a time (thing broke within two weeks or so). I wouldn't rely on it for heavy server storage loads.
2082981
I can't answer your question from personal experience as I don't have 10 USB 2.0 hard drives.But at the moment there are 5 USB 2.0 hard drives running off my Satechi including one that does not have an external power supply. In addition my keyboard and mouse, a DVD drive with no external power supply, an Epson scanner, and an HP laser printer are connected to it. I see no reason why there couldn't be even 12 hard drives connected if each has its own power supply, provided the Satechi hub is being powered by its ac adapter.
2274443
You will need 4 adapters. Each adapter can only use one hdd. It has enough power for a mobile/portable drive.
2126787
Yes, if you get a 5VDC power supply with the appropriate plug, it will allow you to supply the requisite power to the unit separate from the data connection. Some drives require more power than others, and some devices don't supply enough, as in your case, so this solves that problem.
1633757
Min 500w but I would not use less than 750w because of other things like DVD burner and fans also need to count usb devices.
1463290
24, yes. 20, no. Fairly certain that you'll need all 24 for adequate power.
2020842
One drive-likely no problem. You could try attaching 2 drives and might be fine, I am not sure. Again, to be safe, buy a "powered"hub.
106284
Not exactly sure about your question.EVERY drive will need both a power cable and a data cable.
822631
Your hard drive probably needs more power (current) than a single USB port can supply which is 5v @ 2A max
1182535
Yes I'm running two hard drives. If you want more it would have to be an external.