Difference between USB A and B type connector interfaces

USB is an acronym for Universal Serial Bus, which is an external bus standard. In the interface catalog of the USB-232/485 series, it indicates that the 1-port interface has a USB Type A plug, while the 2-port and 4-port interfaces have a USB Type B connector. What is the difference between these USB connector interfaces?Difference between USB Type A and USB Type B connector interfaces:The USB socket on a PC is a Type A connector, which we can recognize by its rectangular shape.Type A sockets can be found on upstream devices, such as USB hosts or hubs, etc.USB Type A plugs can also be found on cable cords and smaller peripheral devices, such as mice and flash drives, etc. Some of the larger USB peripherals (such as printers and scanners) use detachable cable cords and will use the square-shaped USB Type B receptacle. Instruments, on the other hand, are another type of downstream device, and to connect an instrument to a PC you will also need to use a USB Type A to Type B cable. Both types of plugs have the same number of pins and are electrically identical, they are only mechanically different. This is a feature deliberately designed by the implementers of the USB connector interface to prevent connecting a host computer to another host computer, which could potentially lead to a short circuit.

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