Does it need USB power if I want to connect it only for picture and don't need to use audio
87592
Yes, this needs usb power to function at all. You don't have to use the sound, but usb is always necessary.
87593
I am not sure I can fully answer your question technically speaking, but it can only be used with the power source that it came with and what goes in one end is the AV cables, which I am guessing you can leave off the audio cable and just use the other two cables and then it will only be able to use the hdmi out the other side. That is all I know. My best.
1111844
There are one cable USB to an -Mini USB (http://en.wikipedia.org/wiki/USB) in the packet. Its Powered by the USB, no need for extra power.
831936
No, power is only needed when using items that exceed your computer's usb maximum millivolt output.
1282950
USB will only deliver power. The sound has to go through the cables to AUX.
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.
1209511
USB is for firmware updates which I have not tried. Power is only through the 4pin Xlr connector.
1874947
Manual states that the USB port is for debugging/development. I connected the camera to USB phone charger, but the camera would not show any sign of life. I believe it doesn't power from USB, unfortunately...
286503
Yes it needs power and it comes with the 5v power supply included that plugs into it. I was very satisfied wit the unit. I amplified the analog output using cheap computer speakers then pluging headphones into the jack on the computer speakers. The pictures and whats included in the box is shown out on the amazon site.
20271
No, USB only for charges. Connection to pc through Bluetooth or jack cables. It is very good for games.
333862
No external power source needed. Just simply plug in the 3.0 USB to the PC and you are set. :)
1428996
Yes, it also is used for charging the battery, however if you have a separate memory card reader or on your computer you don't need it for transferring pictures.
452514
Yep, it needs power. However, it can take power through USB as well as AC. Most TV's and HDMI devices it would plug into have USB ports already, and it includes a short USB cable. All of them I have in place now (4) use the USB supplied power.
329283
It can be plugged in via USB as a webcam, for file transfer, or printing, but there's no way to use it in "normal" camera mode without the battery. USB is the only external power source - and works without the battery - but only as an external webcam connected to a computer.
658877
No, this unit is powered by the usb connection and also gets its sound through the usb connection.
842171
If your using an external USB device that has its own power supply (i.e. external HD that plugs into the wall) I'm pretty sure you don't need to power this card.
586146
No, it needs a power source. Ac/ DC connection. No headphone connection either
23300
No. It gets its power supply from the raspberry itself. No need for external power