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I have a replacement of the internal USB camera for the laptop Acer Aspire 5750G. AFAIK USB has only 4 connections (5V, D+, D-, GND). On the PCB of the camera I noticed there are 5. They are labeled: 3.3V, D+, D-, GND and SH. Does anyone know what is "SH" connection for? It seems that it's just connected to GND but I'm not sure. Can anyone help me? Thank you.
Francesco Zanini
Posted 2012-10-18T19:56:49.827
Reputation: 745
Not sure, SH is not in the USB specs: http://pinouts.ru/Slots/USB_pinout.shtml - It could be something like you see here: http://pinoutsguide.com/DigitalCameras/olympus-c70z_pinout.shtml - SH could stand for shell, which is a GND connection.
– MaQleod – 2012-10-18T20:36:44.783This could probably be migrated to http://electronics.stackexchange.com/ for better results.
– MetaGuru – 2012-10-18T20:39:59.6471Cut open any USB cable you have lying around. You will find five connections. – David Schwartz – 2012-10-18T20:46:10.607
I think it's shield (or shell) ground connection, it makes sense. Thank's for the answers. I didn't know about electronics.stackexchange.com. – Francesco Zanini – 2012-10-18T20:47:03.103