Currently Being ModeratedJun 27, 2013 9:49 AM (in response to jason.hartfield)
They are just different size/shape connectors - they all have the same functionality.
Currently Being ModeratedJun 27, 2013 10:11 AM (in response to MartinR)
Actually, not necessarily. All USB of the same type, have the same functionality. For instance, a cable plugged into USB 2.0, whether that be USB 2.0 A, USB 2.0 B, USB Micro, USB Mini, or USB to USB, will all function the same way, at a maximum speed of 480Mbit/s (which translates to a transfer speed of 35mb/s)
HOWEVER, in a USB 3.0 system, whether that be USB 3.0 A, USB 3.0 B, USB3 Micro, USB3 Mini, or USB3 to USB3, you have a maximum transfer speed of 3.2Gbit/s (or a realized transfer speed of 400mb/s)
So all types of CONNECTORS work the same way when plugged into the same port, but USB 2 and USB 3 are totally different, especially sicne USB2 has 4 pins, and USB3 has 9 pins.
Currently Being ModeratedJun 27, 2013 10:13 AM (in response to jason.hartfield)
As to your follow-up question, yes, all HDMI connectors are the same. There is only one kind of HDMI connector.
Currently Being ModeratedJun 27, 2013 5:45 PM (in response to ComputerFixer)
Well, OP asked about the connectors, so the answer was good as is.
I would expand on your reply even more ...
USB3 & USB2 are not totally different, and USB 3 is backward compatible with USB 2 & USB 1. So even if you connect a USB3 drive to a USB2 or 1 port, regardless of connector type, it will still work, although it will be limited to the slower data transfer speeds of USB2 or 1.
The 9-pin USB3 standard connectors can be used with the 4-line USB2 & 1 ports. The extra 5 lines in the USB3 connectors are configured in such a way as to preserve the backward compatibility with USB2 & 1. The extra lines are what enable the faster data transfer speed & bandwidth in a totally USB3 connection.
Also, the nominal USB speeds that all the manufacturers quote are laboratory based burst speeds, not sustained data transfer speeds.