However, there are types of symbiosis that are not beneficial and may in fact harm one or both of the species. Symbiotic relationships can be obligate or facultative. Obligate symbiosis is when two organisms are in a symbiotic relationship because they can't survive without each other.owever, there are types of symbiosis that are not beneficial and may in fact harm one or both of the species. Symbiotic relationships can be obligate or facultative. Obligate symbiosis is when two organisms are in a symbiotic relationship because they can't survive without each other.
Micro USB is a miniaturized version of the Universal Serial Bus (USB) interface developed for connecting compact and mobile devices such as smartphones, MP3 players, GPS devices, photo printers and digital cameras. Micro USB connectors exist or have existed in three forms: micro A, micro B and micro USB 3. USB 3 micro is much like micro B, but with an additional pin group on the side for twice the wires, enabling USB 3's greater speed. Like standard USB, the micro versions are plug-and-play and hot-swappable.
In the Catalog for USB-232/485 Series Interfaces, it says that the 1-port interface has a USB Type A plug whereas the 2- and 4-port interfaces have a USB Type B connector. What is the difference? Do I need any additional hardware to connect either one to my computer? Solution: The USB receptacle on your PC is a type A connector and can be recognized by its rectangular shape.Type A receptacles can be found on upstream devices such as a USB host, or a hub. Type A plugs can be found on cables, and smaller peripherals such as a mouse and a flash drive. However, many larger USB peripherals such as printers and scanners use a detachable cable, and use the Type B receptacle, which has a square shape. Instruments are another type of downstream device. To connect an instrument to your PC, you will need to use a USB Type A to Type B cable. The two types of plugs have the same number of pins, and are electrically identical. They are only different mechanically.