Is there a max power/current rating on these? My USB hub is already stressed out. Looking at buying this &amp; another hub to support multiple devices.
1409489
I really don't know if it's any help to you, but I've got a radio panel, auto pilot panel, switch panel, & a throttle control, all plugged into a 7 usb holder, I do have a spare 7 usb holder, if I need it, the altimeter panel goes straight to my PC. Hope this might be of some help to you. Chas
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.
232266
I have one working, battery holds up fine and is not an issue. The issue is the usb distance, I finally used a usb hub and it started working fine. When plug direct in usb I had problems.
1220330
I continuously run two 3GB external hard drives and occasionally plug in a third and never had any indication of a problem. Since this hub has an external power supply I doubt that you will have any problems. It is an exceptionally well-made hub.
189285
Mine came with a power brick, for what it's worth. I believe that this hub corrupted my external usb 3.0 hdd, and pretty much killed it. Don't know this for a fact but I don't use it anymore.
1668388
I think you might possibly be able to connect then together using a usb hub with multiple alternative usb connectors to get a stronger current, unless they have an in-built system to specifically prevent this.
433704
I don't know the power as I haven't a means to test it, but I'd assume that 500mA is what they provide. I do know that they provide power and I use thme to charge usb speakers, a small helicopter, usb headset and many other devices as well as a Nook HD+ and IPad all at the same time. I also use it as a hub when I'm on my desktop computer (usually on the laptop).
1299746
Thank you for your question. This hub can function directly with USB cord connected. Power supply is not necessary when using low power consumption devices. Should you have any questions don't hesitate to contact us again. Thank you.
377432
The hub has a 12 volt, 2 amp power supply. I assume the amp capacity is divided among the 4 ports. You'd need to find out what the current draw is of the external drive to be sure.
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
1011959
5 amps. But the power supply is 12 volts, so in reality the USB-devices you connect can pull way more than that since the USB ports are only 5 volts. Remember that volts multiplied with amps equals wattage (so 12 volts times 5 amps equals 60 watts). Nine USB ports providing a maximum of 0.9 amps times 5 volts equals 40 watts, and then you have a charger port of 2.1 amps times 5 volts which equals 11 watt. So in theory, if you fill up the entire device with USB-devices that can draw maximum power from all the ports, the maximal power draw should be around 51 watt, which is less than the power supply provides. Therefore, this hub should never give you any disconnects because of too huge a power draw, which was a frequent problem with my old USB hub.
458191
Hi there, only to let you know that I bought 2 of them about 2 years ago I have replaced both with other brands, because a usb port failure. My advice find another brand. Thanks
1966747
Its here on my desk top right now, thus it is easy to verify your question. NO, the unit immediately went off line and disconnected. Upon application of the power it came back on line. I selected this unit for two reasons: USB 3.0 and the higher current capacity. I have in the past been frustrated with "low cost" hubs that won't charge a phone for example. Hope this helps. Michael
1577071
Most definitely. As long as you don't mind the usb 2.0, it should be fine. I sure its actually better, because usually power run from the computer shouldn't be as strong as the self powered hub. I power many things through the hub (webcam, memory card readers, chargers) works well.
650928
You know what thats interesting that you bring that up. I hooked a 4 drive enclosure to this hub and evey time I would write to the drives on in the enclosure they would drop off (meaning they would disconnect and then re-connect). when I connect the enclosure to the 3.0 port on my actual machine it worked? I wonder if its becuase of what you brought up with the current not being strong enough? But I dont use this thing. The power connector is flimsy and the ports sometimes would not power up at times. its not well made I would not recommend buying this.
2097576
David, I am going to guess you probably have a defective one, or the power supply is not providing power, do you have a green light? I use all 7 ports, but if I was to unplug it it would fail, if you do have a green light than send it back as it is having trouble, also I would not recommend keyboard / mice, while I have not had trouble for short periods of time, when I went long term sometimes I would need to reset the hub to find the device. While I would not recommend it, in theory you can daisy chain these things up to like 122 devices, but I would urge no one to do it as I have no idea how it would go on powered hubs like these
613507
This hub does not include its own power supply so the *total* current it can supply among all four of its ports is the maximum the port it is plugged into can supply. For USB 3 ports on desktop computers, that is usually 900 ma (0.9 amps); for some laptops it may be only 150 ma (0.15 amps).So no, it will not supply anything even close to four amps on any of its ports, nor will it supply more than 0.9 amps on any one port when plugged into a normal USB 3 host port on a computer even if the other three of its ports are unused.