Do the USB ports share the 2.1 amps or does each port have 2.1 amps?
925779
unknow. I cannot find specs that indicate amps available at the usb ports. I would suspect that 2.1 is the sum total available. That would be a lot of amps for a usb port. That would be around 25/26 watts (at 12 volts) You should determine the load of your plug-in before attempting to power it through this converter.(remember- Volts times amps equal watts) If you know any two of these you can determine the other.
925780
2.1 amps shared; it can produce the full 2.1 amps only if 1 port is being used. 1 amp per USB port can be used if both ports are in use.
925605
Yes it does. It has 2 - USB2.0 and 1 - USB3.0 ports for a total of (3) three.
3977
Yes, one is for data and the other is for power. Sometimes a USB port won't supply enough power through one port. I have used an adapter that just had one USB. This one does require the use of both.
1916524
Do you have other devices using the other ports at the same time? There is only so much power that the USB port can pull from a single USB 2.0 and 3.0 at a time.
2262000
I think there's one very important point that no one has mentioned: USB 3.0 provides 0.9 amps while USB 2.0 provides 0.5 amps. Keep that in mind. BTW, 3.5" always needs the power adapter; 2.5" USUALLY (not always) is not required.
1284438
There are 3 USB ports (2in back 1 in front), I have had multiple external hard drives connected.
1836418
my daughter uses this so I don't have it with me to look at it, but I believe it is one of each. (1 port is 2a, 1 port is 1a).
42755
not completely true, i have 1.1 usb and mine works fine, but 1.0 usb i dunno. everytime i plug it in it tells me "the device can perform faster" with a usb 2.0....
356471
To answer your question yes is port supplies the 2 amps. Each USB port is dedicated. Unlike a hub that would split power. I had two iPads connect as well as one iPad and one iPhone and it worked perfectly
1031564
Yes but one will charge at the recommended 1 amp and the other will quick charge at 2 amps.
1509146
The 2.1 amp is for Apple, the 1 amp is so you can charge other portable devices simultaneously.
862129
YES, Actually all my PCs comes with 2.0 usb ports and it works just fine. ps it works perfect on windows 7 stations because it needs around 500mA (not sure) from the usb ports to work. some XP machines achieve it but others don't because of the power limitations (usually old PCs).
1800578
Hello Tim. The USB ports can be used for charging one 2.1Amps device or two 1Amp devices.
219437
There is just the 2 usb ports in the front and 2 in the back. They are not 2.0
1647880
Sure but two of them will charge at a slower rate them the other two. Has four ports, two are 2 amp and two are 1 amp.
1498107
The One I received has (2) AC Outlets and (2) USB ports as were on the box. Other Brands that I've seen don't have the two USB ports but two Outlets.
2227066
V1 have TOW USB2.0 PORST ,V2 have one USB2.0 PORTS and the others usb3.0 ports.