Question power about USB hub

[brannsiu]

I need a USB hub, maybe 1-to-8 and I will usually connect at most 4 portable hard drives (2.5", without power supply alone) and two nano receiver for wireless keyboard and mouse.

Is a USB-hub without individual power supply
enough for my purpose?

 

[Rogue Leader]

I need a USB hub, maybe 1-to-8 and I will usually connect at most 4 portable hard drives (2.5", without power supply alone) and two nano receiver for wireless keyboard and mouse.

Is a USB-hub without individual power supply
enough for my purpose?

No, If you are connecting portable Hard drives to a hub, the power from the single port it connects to is not enough for all those drives. Get a powered one.

 

[brannsiu]

No, If you are connecting portable Hard drives to a hub, the power from the single port it connects to is not enough for all those drives. Get a powered one.

but all my portable hard drives are 2.5" only, and I don't have a 3.5" hard drive
is it enough??

 

[Rogue Leader]

but all my portable hard drives are 2.5" only, not 3.5"
is it enough??

No. Again nowhere near enough. Mechanical drives even small ones need way more power than like thumb drives or mice/keyboards/etc.

 

[USAFRet]

I need a USB hub, maybe 1-to-8 and I will usually connect at most 4 portable hard drives (2.5", without power supply alone) and two nano receiver for wireless keyboard and mouse.

Is a USB-hub without individual power supply
enough for my purpose?

With multiple drives, a USB hub needs wall power.

Otherwise, you're trying to power multiple drives from a single USB port. Won't work.

 

[brannsiu]

No. Again nowhere near enough. Mechanical drives even small ones need way more power than like thumb drives or mice/keyboards/etc.

but I currently connecting two 2.5" portable hard drives (not indivdually powered) to a USB hub which is also not individually powered. But they are working fine. If I try to connect more hard drives at the same time, what is the worst case scenario ?? just not working or will it hurt my hard drives?? Thanks

 

[brannsiu]

With multiple drives, a USB hub needs wall power.

Otherwise, you're trying to power multiple drives from a single USB port. Won't work.

How many drives is the maximum

 

[Rogue Leader]

but I currently connecting two 2.5" portable hard drives (not indivdually powered) to a USB hub which is also not individually powered. But they are working fine. If I try to connect more hard drives at the same time, what is the worst case scenario ?? just not working or will it hurt my hard drives?? Thanks

It won't work. 2 drives is likely maxing it out. It just won't put out the wattage for 4.

Why bother buying something that i can tell you, for sure, will not work?