Does this unit require external power?
640139
I use it from my directv to a computer monitor and I do not use external power. It works great.
640140
It does not have an external power supply so if you're using it with an application such as an Apple TV, it works great. Your mileage may vary. :D
474735
No, I draws its power from the mother board. You may be thinking of USB hubs, which often require external power. Hope this helps.
1188532
No the model I purchased did not require external power. I needed to convert HDMI from a new laptop to VGA to supply video to an older but still very functional larger fixed monitor. It worked fine. If you have a similar need be sure to check the monitor, some have a dual input VGA and PCI which gives you a choice in the converter/cable that you choose.
514062
No power is needed for this unit. You only need a water hose to hook up to..
22414
Yes, it does need a power source and comes with the cord. Probably would not work for you. It is a nice little unit though.
2023171
yes, it does. But I read in many forums that's better to use an external one.
577168
I only use it with external power, but I believe I recall reading that it can not be powered by USB.
1630179
The unit must be connected to an external battery. It does not have internal power battery.
907288
Hi. With this device, you do not need any external power. The device brings it all included and takes what it needs directly from their computer. It works excellently. Regards. Vincent.
1305610
If you've not looked at the "owners manual" for this item please do a google search and find one. The short answer to that question is none, there's not an external power source, it's 12v and powered by the motherboard connection.
259146
No. It requires external power for the drives and most other USB-powered devices. I ended up connecting my non-powered USB devices into the hub and those requiring power directly into my iMac. Fortunately, I had sufficient devices that didn't need power that it worked.
785028
Does not need external power supply BUT if your HDMI cords are the longer variety it will definitely need externaml power.
121995
No, it doesn't. It's necessary for the unit to be plugged in to a power outlet for use.
574980
No. No power needed. Just hook up the speaker wire to your receiver and you are good to go.
862202
It works without power supply when attached devices have little power consumption but peripherals such as an external hard drive that draws power from the port requires the added boost of the external power supply.
942013
This unit is USB powered, does not need to be plugged to an electric outlet. The computer this device it connected to will power the unit using the USB cable.
361630
NO, it does not require an external but will accept one. I just finished a 1600 mile trip with the unit mounted on the flybridge dash of a 390 Mainship and it never missed a beat.