First, the selection method
1.？ Look at safety certification
Qualified distribution frames must be certified by the state and meet international industry standards. The patch panel and USB socket with intelligent USB charging function must also meet the national standards, and can only be sold after passing CCC safety certification. Good manufacturers will pay special attention to safety. Taking Siemens patch panel as an example, all parts of the product have passed the quality certification of CCC, CQC and CVC, which is safer and more assured.
2. See if USB can be intelligently identified.
Many people will encounter the problem of slow charging speed or insufficient charging for a long time when charging with USB. In fact, the reason lies in the charging model. At present, there are about three charging modes for mobile devices: Apple charging mode, Samsung charging mode, BC 1.2? Charging mode (i.e. D+, D- short circuit mode). Therefore, if the matching USB charging methods of mobile devices are different, there will be problems that they cannot be charged or cannot be charged for a long time. This is why many mobile devices, especially Apple and Samsung's mobile phones or tablets, use the original charger to charge more efficiently.
Therefore, when choosing a USB patch panel, we must pay attention to choosing a patch panel with intelligent identification function, so as to intelligently identify the charging mode required by the equipment, thus matching its required current output, achieving the same charging effect as the original charger, and ensuring safety and ease of use while charging quickly.
The USB charging socket of Siemens Fengyi X 1 patch panel not only has intelligent identification function, but also can realize efficient double charging. Two USB ports can charge the device at the same time, still ensuring high efficiency and greatly shortening the charging time.
3. See if USB has security protection.
When choosing a USB patch panel, we should not only pay attention to whether it has intelligent identification function and whether it can be charged efficiently and quickly, but also pay attention to whether USB has charging protection function. The patch panel with USB charging protection can automatically cut off the power supply and protect the safety of electronic equipment and users under extreme conditions such as unstable voltage, excessive temperature and excessive current.
Take the USB model of Siemens X 1 patch panel as an example. It has the functions of overvoltage protection, overcurrent protection, overheating protection and short circuit protection to protect the safety of USB charging:
1)? When the output voltage exceeds the safety standard, the output can be automatically cut off;
2)? Omni-directional over-current protection to limit the charging current beyond the safe range;
3)? When the temperature of USB main chip exceeds 145℃, it will automatically power off;
4)? If the mobile phone is suddenly short-circuited during charging (such as water inflow, various sudden short-circuit accidents of the charging port or charging line of the mobile phone), the short-circuit protection function can protect the safety of the mobile phone and the user.
4. Be optimistic about the instruction logo
The patch panels produced by regular manufacturers should be marked with: rated current, rated voltage, symbol of power supply nature, manufacturer and product number. The packaging of qualified patch panels has complete information about manufacturers and products, and most of the logos are formed at one time during injection molding or stamping, which is clear and obvious, while those with skewed and vague logos are cottage products. Some unqualified sockets are poorly packaged and lack the most basic manufacturer and product information, especially the production date on the product packaging. Many inferior sockets are not marked with production date on the packaging, and often belong to unqualified sockets.
5. Compare product appearance
With the logo, you should also check the appearance of the product. For example, the panel of the patch panel should be uniform in color, smooth in surface and free from defects such as sag, mottled color, bubbles, cracks, deformation and scratches; It can be seen that the metal parts have no burr, crack, corrosion trace, rust and screw head damage. In addition, the qualified patch panel has fine workmanship, the edges of the shell and the jack are burr-free, the size of the jack is symmetrical and uniform, and the poor quality socket shell has rough workmanship.
6. The feeling of touching the product
A good patch panel feels good when used, which is subjective and can be measured by feel. The qualified patch panel not only has moderate insertion feeling and elasticity in each hole, but also has the same insertion feeling in each jack; The plugging and unplugging force of the unqualified patch panel is too loose or too tight, the elasticity is poor, and it is easy to loosen, and each hole can obviously feel different when held in your hand. In addition, the power cord of the qualified patch panel is moderately soft and hard, and the connection with the socket is firm and reliable; However, the power cord of the unqualified patch panel feels soft, and it is not firmly connected with the patch panel and is easy to break. Good brands will also pay attention to the design of patch panel plugs. Siemens patch panel adopts patented anti-electric shock plug. Its design has two advantages. First, safety. When in use, fingers will not touch the metal charged body to prevent electric shock accidents. Second, convenience. If it needs to be inserted or pulled out, it is easy to hold and use force.
7. Find a purchase channel
Illegal sellers mainly mix counterfeit or inferior products into branded switchboard products by changing packaging, or keep the panel of branded products and replace the inner core with inferior products. Therefore, in addition to identifying the brand when buying the switchboard, it is best to go to the brand company's specialty store or designated sales channel to buy it, and keep the receipt so that the rights can be defended in the future. In order to prevent counterfeit products, Siemens has an anti-counterfeiting code on the back of each patch panel product, which is also very convenient to query. You can log in to official website or your mobile phone.
8. Choose famous brands
Try to buy the products of well-known enterprises, especially those that have passed the national supervision and spot check many times, and don't buy brands that have been exposed and punished many times. A good brand is not only guaranteed in quality and safety, but also in use.
Second, matters needing attention
Finally, after selecting the USB patch panel, there are still some points to pay attention to in the use process, such as: the wires used in the patch panel should not be too long, and the power supply should be used as close as possible; ? It is dangerous to put the wires of the patch panel in the passage where people come and go. Once the wire is aged or damaged by external force, it is easy to get an electric shock and personal injury. Therefore, it is best to install protective trunking where it is easy to be touched. ? When using, don't coil the wires of the patch panel together, or bind the wires together, and coil the wires that are too long. If it is used for a long time, the wires will accumulate heat and easily lead to fire accidents, so the wires should be scattered as much as possible.
The above is the knowledge about USB patch panel summarized by Bian Xiao. I wonder if you have any further understanding and understanding of the purchase of USB patch panels after reading it? In fact, the application of USB patch panel in our life is very important, especially with the continuous development of electronic information, we might as well know more about it. Especially the method of purchasing, so that there are more ways to choose the USB patch panel that suits you in the future. I hope Bian Xiao's advice can help you.