Usb outlet is 2.1 amps? Or less? How many usb outlets?
924872
this device sucks....used it twice and burned out on me. Get another brand.....check around.
572519
USB 1.x and 2.0 have the same power pins 1 and 4 with +5v and ground, respectively. Will work on both.
678831
Two USB ports. And you can use multiple "sections" at once. Meaning you can use the USB port and the plug at the same time
381876
This hub is underpowered by almost 45%. USB 2.0 ports should be able to pull 500mA, so with 7 ports the AC adapter should supply 3.5 Amps. It only delivers 2. Almost every powered hub on the market seems to be similarly underpowered.
1784705
I have charged a device that requires 2.1A, and several that required 1A. They all charged fine. Are you charging with USB 2, USB 3, or using an AC adapter?
1175238
one wall plug becomes two USBs (not sure on amperage) and two plugs w/ some basic surge protectionI've had 4 devices going @ once, but not normally (usually two USBs & my laptop charger plug)the 3 prongs on the back fold in so throwing this plug into a brief case/bag won't lead to bent prongs or stabs into other belongingsI have two (one for travel one for home) and gave two as presentsI like 'em!
1754004
Premium External Power Supply 5v 1A 2A (1000mA - 2000mA) AC/DC Adapter, Plug Tip: 1.35mm x 3.5mm x 7mm, for USB HUB and 2.5-inch HDD Enclosure
1390761
Yes all four plugs can be used at once. They would not put 2 outlet plugs and 2 usb plugs and not expect that they would all be used. The amperage limit on the outlets are probably 15 amps so you cannot exceed that but what your are describing would be no problem
293191
no, it is 5 (FIVE) VOLTS only, not 15 (FIFTEEN).So if you need 15 VOLTS (which I doubt it because all USB 1.0,2.0 and 3.0 can ONLY be 5 VOLTS)If you MISTYPED and it is ONLY 5 VOLTS @ 1.2 AMPS then it WILL work, because the AMPERAGE is how much PUSH the voltage has, so it would charge a 5 VOLTS and do it quicker than 1.2 AMPS, but it does NOT give 3.1 AMPS per USB port, it would max out at 2 AMPS.
2095582
The standard is 500mA for USB 2.0 and 900mA for USB 3.0. Do the math, and you'll see that the power supply doesn't cut it for 24 USB 2.0 and 4 USB 3.0 ports. 24 x 500mA = 12A 4 x 900mA = 3.6A The power supply would need to be 15.6A at 5V. Since the power supply is only 4A at 5V, you're only going to be able to power four USB 3.0 devices (900mA x 4 = 3.6A) OR eight USB 2.0 devices (500mA x 8 = 4A). Perhaps Manhattan should do what Anker does and use a 12V adapter and whatever they do to undervolt/cut down their USB 3.0 9-port hub to 5V per port (that thing comes with a 12V, 5A power adapter! The brick is almost as big as most laptop power bricks!) Using the formula of Volts x Amps = Watts (5V x 15.6A = 78W), we can conclude that at 12V, only 6.5A would be needed (12V x 6.5A = 78W). It's a shame, though, as a 28-port USB hub is cool as all hell, but in practice, it doesn't work right unless you're using all self-powered devices (devices that have their own power adapters).
789304
This is what this device is designed for - 2 USB ports give extra power to 1 device.
1890987
MANUFACTURER RESPONSE: Thanks for asking! 2.5A is the total power available from the power supply- NOT the amount of power available to ANY ports. To say that another way, you would have 625mA (.625A) power per port max when using all 4 ports. The max current draw for a device complying with the BC 1.1 specification from any given port is 1500mA (1.5A). Please note this full current draw would be available to only one device at a time. When charging 2 devices simultaneously, we would expect charging at a max rate of around ~1250mA (~1.25A)- assuming no current is required by devices in the other two ports. Sorry we can't offer a more clear explanation here- USB charging is really a complex topic where devices from different manufacturers have very different behaviors. To top that off, many devices actually negotiate with the host PC to determine what rate to charge at, so behaviors on these will vary depending on whether a host PC is on and awake versus when there is no host PC or when the PC is sleeping. A more detailed explanation of the history on how the industry got into this confusing state is here: http://www.maximintegrated.com/app-notes/index.mvp/id/4803 Hope this helps! Please let us know of any other questions by emailing support@plugable.com or visiting support.plugable.com Best wishes- Jeff Everett Plugable Technologies
1967425
one output port is for 2 Amp, the other is for 0.6 Amp, and the cable micro USB is for 2 Amp too. This info is from the case and in the manual. The USB cable shares the 2 Amp port outlet.
613508
Generally amperage output for USB 3.0 is 0.5-0.9 mA for standard and up to 5 mA for charging devices. This may drop a bit if you have multiple devices plugged in.
2034820
Haven't tested this one specifically but almost all that have been legitimately tested that are similar to this one have 2.4 total so if you have one item plugged in it will draw up to 2.4 a. If you have two plugged in the unit will allocate the 2.4 amps between both items but no more. There are plenty of chargers out there that will deliver a full 2.4 amps to each usb port but they are a little more expensive.I hope this helps and good luck!Chris
629126
I would check with Wagan to be sure, but as near as I know the output from any port is standard USB at 2.1 amps. I hear some Samsung devices have problems due to their proprietary wiring of USB.
1632860
The 175 watt inverter will max-out at 1.46 amps @ 120 volts. I don't understand the part of your question about "Do amps apply only to USB?" -Roger