Cat6 network cable supports transmission speeds up to 10G, frequency bandwidth up to 250MHz, and the Cat6a network cable can support frequency bandwidth up to 500MHz, which is twice that of the
Cat6 network. Cat7 network supports frequency bandwidth up to 600 MHz and also supports 10GBASE-T Ethernet. In addition, Cat7 network lines greatly reduce crosstalk noise compared to Cat6 network lines and Cat6a network lines. The Cat5e network line, Cat6 network line, and Cat6a network line all have RJ45 connectors, but the Cat7 network line has a special connector. Its connector type is GigaCat45(CG45). At present, the Cat6 network line and the Cat6a network line have been recognized by the TIA/EIA standard, but the Cat7 network line does not. Cat6 and Cat6a are suitable for home use. Conversely, if you are running multiple applications, it is best to choose Cat7 because it not only supports multiple applications, but also has better performance. CAT7 cable is no longer an unshielded twisted pair line, but a shielded twisted pair line, so it can provide the overall bandwidth of the crosstalk ratio and 600MHz at least 500 MHz, which is more than twice that of the CAT6 cable and the CAT6A cable.
The transmission rate can reach 10 Gbps. In the CAT7 of cables, each pair of lines has one-a shield layer four pairs of lines in one and a common large shield layer. From the physical structure, the additional shield layer allows the CAT7 cable to have a larger line diameter. Another important difference is its ability to connect hardware. The parameters of the CAT7 systems require that all wire pairs of the connector provide at least 60DB comprehensive proximal string windings at 60MHZ. The CAT5E systems only require 43 DB at 100 MHz, and the CAT6 has a value of 46 DB at 250 MHz.

First we should carefully check the net line box packaging is in good condition. The packing cartons of genuine goods net wire, from material texture to printing character have strict standard. In addition, many manufacturers will also attach Anti-Counterfeiting labels to the outer packaging, such as the words such as origin, execution standards, product categories, and line length on the insulation layer of the outer protective cover of the wire.
Next, observe the logo on the net. Under normal circumstances, the characters printed on the plastic foreskin of the genuine mesh wire are very clear and sleek, and there is basically no jagged. The handwriting printing quality of fake goods is poor, some fonts are not clear, and some are severely jagged.
Third, touch the wire to determine the flexibility of the wire. Good quality of the wire in the design of the convenience of wiring, as far as possible to do so, no matter how easy to bend, and not easily broken. Because regular manufacturers in the production of wire wire, take into account that the wire often needs to bend when wiring, leaving the skin with a definite stretching, and try to be very flexible. And a number of illegal manufacturers in the production in order to reduce costs for profits, added other metal elements in the copper, the wire made is relatively hard, not easy to bend, easy to produce breakwires in use.