RJ45 Jack connector is commonly known as crystal head. RJ-45 is a network interface specification, similar to the RJ-11 interface, where both ends of a twisted pair must be fitted with this RJ-45 plug in order to be plugged into the RJ-45 interface of a network card (NIC), hub or Switch for network communication.

How to buy RJ45 connectors and network cables?

1, good packaging, good goods are bound to have good packaging, but not necessarily good packaging is good goods.

2, with a logo.

3, the stranded density of the cable, if the stranded density does not meet the technical requirements will cause the cable resistance mismatch, causing near-end crosstalk to shorten the transmission distance and reduce transmission speed, choose the stranded density of high twisted pair cable when buying.

4, good toughness.

5, flame retardant, twisted pair outer skin in addition to a certain degree of tensile strength, but also have flame retardant, test method will be the cable with a large fire, the outer skin in the fire will have a little head, then take out if the flame retardant good cable will immediately stop burning.