Question about BafoTech BAFO (BF-700) Networking Hub

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What power supply is required for the Bafo 700 7 port usb hub ?

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Probably the one it came with?

Anyway, if there are details about voltage and amperage on the back of it you could buy an aftermarket switching powersupply.

The voltage output of the powersupply has to be within 5-10% of what the hub needs, but the amperage can be equal or higher. (anyone who disagrees with this is wrong)

Posted on May 26, 2010

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1 Answer

Need power supply for kensington PocketHUB 7 Port USB


The K33366 POCKETHUB 7 PORT HI-SPEED USB HUB requires a 5volt supply at 4amps

regards

Jul 02, 2014 | Kensington K33366 POCKETHUB 7 PORT...

1 Answer

When i put the USB cable and connect to the LAP, its not getting charged. How can i solve the problem? do i need to install any software?


Hi - when you say "LAP" I assume you mean laptop or notebook computer. Some computer USB ports do not have sufficient power to charge (or operate) devices like cellphones, GPS, large external hard drives, etc. You may be able to charge if you disconnect all other USB devices that aren't needed to run the computer. In order to get around the problem without having to do all that, either purchase an external charger for the GPS (which may be fairly expensive) or purchase a powered USB hub.

An external powered USB hub looks like a traditional USB hub, except for the fact that it has a power cord to connect to your home power outlets. The power cord will often look like AC adapter. The powered USB hub is ideal because they provide additional USB ports, are fairly inexpensive, they provide all the power for the USB devices that are connect to them (the computer's internal power supply is not used) and it can power or charge devices connected to them without needed the computer to be powered on. Simply plug the USB hub into a USB port, and AC power source - then connect the devices that need a large amount of power to the hub's USB ports instead of the computer's USB ports.

steve_con_70.jpg
The parts included with powered USB hub (clockwise from left): USB hub, USB connecting cable and AC power adapter.

Many powered hubs will work without the power adapter - however they will supply power to the devices connected from the computer's internal power supply.

I hope this helps and good luck! Please rate my reply. Thank you.

Jun 08, 2011 | GPS

1 Answer

I purchased the unit and plugged in. Is there something else I should have done. It doesn't seem to be working.


If you plugged it into an unpowered USB hub, it may not be getting enough current. Try plugging it directly into a USB port on the computer. It requires 2 amps to spin up and unpowered hubs only provide 500ma for all connectors, just a quarter of the required power. Or you can buy a powered hub, which relieves the strain on your computer's power supply.

Aug 05, 2010 | Western Digital Passport 320GB External...

1 Answer

My dynex 4-port works without having external power connected. I thought part of the purpose of the bridge was to isolate the motherboard USB power from the device, but it appears to be bridged thru to the...


The hub will not isolate connected devices from your motherboard. However, when you use the hub with its own power supply it will pull less power from the motherboard.

Feb 28, 2010 | Dynex 4-Port USB 2.0 Hub

2 Answers

I have a Q-Stor 7 port USB hub, Model QU2RCT7. I


I don't have the original power supply for my QU2RCT7 either, but most hubs use a 5v DC power adapter, typically with a 2A. (2 amp) rating. I'm using such an adapter with my QU2RCT7 and it works fine. Make sure the adapter you select is tip-positive (ie, the "+" terminal is the "tip," or center, of the connector).


Sep 14, 2009 | QPS (QU2RCT7) 7-Port USB Hub

1 Answer

Hp pavilion dv4000 usb port can't use


This error occures when a USB device draws more power than the USB port can supply.
To fix this problem, purchase a powered USB hub. Power up the hub and connect it to the laptop's USB port and then plug the USB device into the powered USB hub.

May 05, 2009 | HP Pavilion dv4000 Notebook

1 Answer

Power surge on hub port a usb device has exceeded the power limits of its hub port there is nothing connected to my computer


I don't know how old your system might be or how many USB controllers it has on the motherboard, but understand this...

Theoretically, one USB port can support up to 999 "daisy chained" devices.

With that said...the way a USB port is implemented on a motherboard, manufacturers enable two or four ports to be working off of one USB interface. Those ports you see on the front of your computer are most likely connected to just one USB interface on the actual motherboard and that's why you always see computers with USB ports located together in pairs.

With that in mind, you're USB ports are connected to what is referred to as a "hub"(that motherboard interface), which only outputs so much power. If one device or many devices attached to this "hub" exceed the power output of this "hub" then it will either back down to USB 1.1 speeds or it won't function at all. That is why some USB accessories require their own wall adapter, because the USB can't supply all the necessary power for it.

So one of two things has happened, either your USB port is fried or you introduced a new USB item to the "hub" that surpasses the power requirements of what your USB hub can output once you plug in your mp3 player.

You can troubleshoot by unplugging all un-necessary USB equipment and try only that port again. My assumption is that the USB hub is fine but the actual usb port you use might be damaged.

Good luck.

Mar 12, 2009 | Acer Aspire One PC Notebook

8 Answers

Power supply for Targus 4 hub usb 2


Most USB hubs do not need an external power supply, except when a connected USB device draws more power than the computer/laptop USB port can supply. In this case an external power supply will need to be connected to the USB hub.
Normally this would be a 5 volt power supply, but make sure the polarity on the connector matches the power connector on the hub, check the label on the hub, sometimes it states to power requirements of the hub as well as the polarity on the connector. Normally the pin on the hub's power connector is positive (ie. +5V)

Nov 13, 2008 | Targus PAUH217U 4-Port USB Hub

1 Answer

I purchased a Targus USB 4-Port hub for use with my iMac 24" computer (new), using iMac OS 10.5.2. There is a power input connector on the hub, but no mention of power requirements on the package...


Dear John,
this USB hub don't need any external power, but you are right there is a power input connector comes with every Targus Usb hub. but these hub self powered . you can use this hub without any worry.

Regards

Apr 26, 2008 | Computers & Internet

1 Answer

Error message "power surge on hub" when attempting to upload from N C 5200


Hi, are you using a USB hub or attaching directly to the computer USB port?
  1. If you are using a USB hub, which is then connected to your computer ... you either need to
    1. Plug the camera directly in to the computer so that the computer supplies the USB with more power to the camera.
    2. If the USB hub has a power plug/adapter, use it so the USB hub gets more power to handle the task.
    3. Buy a different USB hub that has a power adapter so enough juice can be supplied to the tasks that USB is asking to do.
  2. Some USBs on the computer aren't giving enough power, you may have a bad USB port, try another one.
  3. Use a Card Reader, which is much faster to download pictures than from the camera.
Reason: some times, the USB task is asking for a lot more power than is being supplied through the current USB path. You have to either add power through an adapter or plug directly in to a power source (like the computer directly, or a reader that doesn't require as much power to operate it).

This should help, if so, please mark as FixYa!

ThankYa!

Dec 01, 2007 | Nikon Coolpix 5200 Digital Camera

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