There are six types of USB cables.
Type1
USB-A. This is a standard connector, and you can find it at one end of almost every USB cable. This is a rectangular connector and can only be installed in one way. USB-A is most commonly used in laptops or power outlets. Many TVs, game systems, cars, media players, and other devices also have one or more. When charging, you will connect the USB-A side into the USB-plug or into a laptop or computer. The USB-A cable will only enter the port in one way. Yes, you won't find a cable with USB-A on both ends, because there is actually no useful situation. Make sure to insert the cable correctly to avoid damage to the cable or equipment.
Type 2
USB-B. This is an older connector that is rarely used today. They are commonly used to connect printers or external hard drives to computers. the USB Type B connector (technically known as a “Standard B” connector) is roughly square in appearance, with a squarish protrusion on top. Type B ports are found on many USB non-host devices, such as audio interfaces, external hard drives, and printers. Type B plugs are found on one end of most USB cables.
Type 3
USB-Mini. As the name suggests, this is a smaller connection type that's good for mobile devices. It's been largely superseded by micro-USB, but you'll still find it on some cameras, MP3 players, and other such devices.
Type 4
Micro-USB. This is a miniature connector that is very popular on various portable devices. Micro USB was once the most common USB port, but it can still be found in many older models. This type of connection does not require a computer to read data. However, some smartphones have moved to the newer USB-C port. Be careful to match the shape of the port with the Micro-USB cable to avoid any damage.
Type 5
USB-C. This is the latest USB standard. Unlike older cables, the latter usually have USB-A on one end and another type on the other end, and all new Samsung devices have USB-C ports. The USB-C cables allow high speed data transfers and a higher power flow, allowing your phone to charge more quickly. The USB-C cable is also reversible and can be inserted in any way. USB-C is gradually adopted by device manufacturers. Many newer Android phones, such as Samsung Galaxy 20, Note10, Fold. Apple's latest MacBook and MacBook Pro models also only have USB-C ports.
Type 6
USB 3. It is so-called "backwards compatible", which means they can actually be used with older USB ports and other bulk USB cables. USB 3 has connector pins of different shapes, so it can withstand more frequent use. The USB 3 has different shaped connector pins so it can withstand more frequent use. (and the color is usually blue, so you can distinguish them). However, it is important to note that all devices must be compatible with USB 3 to get higher speeds. For example, if you have a USB 3.1 compatible device, you can transfer data at 10 Gbps using these cables. However, if you are using an older device, you will not be able to get the same fast data transfer rate.
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