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What is USB 3.0 and USB 2.0? USB (Universal Serial Bus) is a very popular connection standard that allows direct connection to peripheral devices such as keyboards, mobile devices, etc. The difference between USB 3.0 and USB 2.0 standards is the transfer rate and amperage. Released in 2009, devices that are compatible with the USB 3.0 standard can achieve speeds up to 10 times that of USB 2.0. The USB 3.0 standard can be backward compatible with USB 2.0, which means you can plug a standard USB 3.0 into a USB 2.0 port on a laptop for normal use, but the speed is limited. Therefore, both devices connected to each other must have the same USB 3.0 standard to achieve the highest speed. Quick comparison of USB 3.0 and USB 2.0 USB 2.0 and USB 3.0 port types USB 2.0 or USB 3.0 is a data transfer protocol while or MicroUSB is a connection type, classified as follows: How to distinguish USB 2.0 and 3.0 ports? There are a few common ways that you can easily tell the difference

1 In which case to use oxygen concentrator? If your family has an elderly person who needs to use an oxygen concentrator, you should first consult a professional doctor to ensure health safety. The following are some cases in which an oxygen concentrator can be used for the elderly: People with pneumonia, asthma, chronic obstructive pulmonary disease, cerebral circulatory insufficiency. People with impaired breathing ability, impaired lung function. Patient is undergoing surgery. Vegetarians. People with coal gas poisoning, chemical poisoning. People with diseases that cause a decrease in the number of red and white blood cells such as hemangiomas, anemia, and atelectasis. 2 Is the home oxygen generator for the elderly good? Home oxygen concentrator is a useful device for elderly people, people with lung-related diseases who feel short of breath and tired. Typically, these patients will have more CO2 and less oxygen in their blood. Using an oxygen concentrator wi

1 Sharpen knives with random stones Step 1 : You can find any stone that is a convenient size and shape to sharpen your knife. As long as the surface of the stone has a certain roughness . Step 2 : Drag the rust away from the blade, especially along the cutter blade. Step 3 : Pull and sharpen the blade forward , alternating sharpening both sides . Step 4 : Absorb a little water on the surface of the knife and stone during the sharpening process. Step 5 : The grinding part, you will find it brighter and sharper than before. Move the blade across the surface of a wooden cutting board , or piece of wood , to see the sharpness of the sharpened blade. Step 6 : Once you're satisfied with the blade's sharpness, glide the blade a few more times, diagonally across the sole of the leather shoe . Step 7 : Within just a few minutes, you can sharpen your knife without having to equip a sharpening stone, or a professional sharpening rod. 2 Sharpeni

1 Replenish enough water for the body Not only before going to bed, but throughout the day, you need to replenish the amount of water needed by the body. Thus, the new skin is fully supplied with water, helping to improve the smoothness and youthfulness of the skin. People who stay up late at night often need to drink more water . This way helps the skin eliminate toxins and prevents dehydration when you stay up late to watch football. 2 Limit touching your face, especially acne spots You should limit your hands touching your face too many times , because your hands come in contact with everything every day, which is a place for many bacteria to accumulate. Therefore, dirty hands when in contact with the skin will cause inflammation, easy to produce acne. Moreover, touching your face often will create friction that makes irritated skin more prone to acne. 3 Clean skin and skincare before going to bed Wash your face cleanly after work for the day and before going

Chocolate is often present in every home. Does the calorie content in chocolate cause overweight and obesity? The following article of mine reveals to you interesting things from chocolate. Chocolate is the most popular food in the world Chocolate provides a lot of energy With just one chocolate you have enough energy to walk up to 46m. The nutritional content in chocolate is quite high. To walk around the world, you need to eat 870,000 chocolates. However, whether chocolate causes overweight or obesity is still controversial. Some experts reject the idea that eating chocolate will cause overweight and obesity. Chocolate contains three fatty acids Stearic, Panmitic and Oleicz.Panmitic contains a lot of fat which can increase the amount of Colestoron, while Oleicz does not have much fat and will decrease the amount of Colextoron. Stearic, on the other hand, has no effect on the amount of Colextoron. So the effect of chocolate on your weight is completely neutral. Chocolate prov

1 What is an Ebook? Ebook is a type of electronic book that is used through personal devices such as computers, smartphones, . Although this is one of many types of books, it is considered an electronic file and is designed to look like real books but are digital files. Unlike regular paper books, e-books come in many different formats. To be more specific, the book has many file extensions such as PDF, PRC LIT, etc. 2 What's outstanding about Ebooks compared to regular books? Low price As can be seen, the price of ebooks is usually much cheaper, less than half the price of paper books. Books also do not deteriorate over time. Read books anytime, anywhere With Ebook, users will no longer have to worry about not being able to bring books out because they are too bulky as often found in paper books. Just have a smart device such as smartphone, tablet, laptop. You can take your “bookstore” anywhere. Provide maximum audio and visual material Documents and book

Melamine is a type of plastic commonly used in the production of household appliances. With diverse, beautiful designs and good quality feel, melamine utensils are being trusted by many users. So what is this melamine resin, is it good, is it safe for health? Read the article below to get the answer. What is melamine resin? Melamine is a high-grade plastic line commonly used to produce dishes, chopsticks , and cooking utensils. Melamine resin with the advantage of being easy to shape and decorate by heat treatment, looks very similar to ceramics, so it is very beautiful, diverse in colors and designs. In addition, melamine resin is very durable and scratch resistant, shiny surface, easy to clean, heat resistant up to 120 degrees Celsius. Is melamine resin safe? Melamine has a very stable molecular structure, when it comes to food it can hardly "migrate" into food, so it is quite safe for health. Experiments have proven that, in conditions of use that do not con

1 Reduce motion frame effect Reducing the effect of moving frames on the machine also means that your device runs faster because it saves time waiting for transitions between frames. To do this, go to Settings > About phone , keep tapping 7 times on Version number . Then go to Developer Options and scale down the animation to 0.0x or 0.5x . 2 Use another Launcher Launchers (applications that can change the look of your phone or act as a personal assistant) come by default, which can consume more memory and slow down your device. Therefore, installing another launcher to fix slow machine is one of the useful solutions to increase machine performance. Dien may GREEN would like to suggest you a new Smart launcher application with a beautiful interface for quick access and the ability to automatically arrange applications with the same function into different folders. In particular, these launchers also cause the device to run out, making it run smoother and faster.