Stupid question. Why would I need two USB ports at the same time?
1372409
Agree with other buyers. The second port is needed for adequate power to run HDDs . However through my experience, it didn't work at all, though computer detects the drive. I tried two with the same result - this contraption is not working!
1372410
To copy a hard drive to 2 computers at the same time. When using the cable only 1 USB cable needs to be plugged in to use it.
1416004
It only requires one connection. It comes with a cable that works in USB 2.0 or USB 3.0. You can use either. but do not have to use both at the same time.
981814
No it's not possible paring more than one at the same time, you should discconect the current device if you want to connect a different device.
828068
Yes, both ports can be used at the same time or separately to charge android devices.
843957
Negative, the USB 2.0 ports are simply for add on's. I use one for my mouse, and a second for my wireless air mouse when I'm reclining on my sofa in the office.
2110247
It is for connecting two devices to one usb port, in and of itself it provides no power whatsoever, nor does it in anyway provide or enable whatever software is required to make devices work. Clear? It is excellent for connecting two non-powered items such as a key board and mouse. In addition there is no switching mechanism, thus its function is to make available two usb ports using only one on the computer.
498298
You could use two like that but it would not be daisy chaining. There would be no connection from the first drive to the second, but the computer would see both.
1284438
There are 3 USB ports (2in back 1 in front), I have had multiple external hard drives connected.
548619
I think you can have as many of these as you want. Just need to have the USB ports or a bunch of usb hubs.
329392
there are 4 usb ports 2 on the left and 2 on the right. the 2 on the right are usb 3.0
1640071
This one works great with all USB ports. I'm thinking of getting another. Good luck to you.
2185479
I have used multiple USB slots at the same time with no problems. This laptop only has two USB 3.0 slots and one 2.0 though. I should also add, that I removed Windows "8" andinstalled Windows "7" Pro as soon as I got my laptop. So there could, I guess, be an issue with Windows "8" but if so I haven't heard about it. I have taken this laptop to severalcountries with "dirty power" and it has traveled extensively with me and never given a problem of any kind. Good luck!!
372687
No, the "A" USB port is for apple products and can't support two devices at the same time. The "NA" USB port is for MP3 players and the like but I believe that when one port is being used, the other one in inoperative.
944243
If you are using a low-power USB connection then the second cable provides additional power. You probably won't need to use it.
5730
Nope it doesn't allow for two outlets or two devices to charde at the same time, because each kind of connector are plugged into each othe to allow for multiple connectors to be packed in it
328969
Only 1 drive can be recognized at a time. You can fill one then remove it and attach another. I use a USB switch which only powers one port at a time. This allows me to plug in multiple external disc at a time and switch back and forth as needed.
789304
This is what this device is designed for - 2 USB ports give extra power to 1 device.