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It should provide more than five times the bandwidth of class-200-mhz cable than that of class-I cable. The transmission performance of category 6 cabling is much higher than that of category 5, and it is most suitable for applications with transmission rate of 1Gbps. An important difference between category 6 and category 5 is that it improves the performance of crosstalk and return loss. For the new generation of full duplex high-speed network applications, excellent return loss performance is very important.