Black Box ICS02A manual Appendix Technical Glossary, Appendix. Technical Glossary USB Connectors

Appendix: Technical Glossary

Appendix. Technical Glossary

A.1 USB Connectors

USB cables have two classes of connectors. The Type A connectors are used to connect the cable from a USB device to a Type A port on a computer or hub. The Type B connectors are used to attach the USB cable from a USB host to a USB device or hub. There are full-sized, mini, and micro variants of both type A and B connectors.

USB 3.0 introduces changes to the connectors. USB 3.0 and USB 2.0 Type A connectors are the same shape and size and are compatible with each other. However, the USB 3.0 Type B connector will not fit in a USB 2.0 Type B port, though a USB 2.0 Type B connector will fit into a USB 3.0 Type B port.

Figure A-1. USB connectors.

A.2 Duplex LC Crossover

When a crossover fiber-optic cable is needed, the cable has the transmit signal on one end connected to the receive signal at the other end.

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