As the title states, a UTP cable has no shielding. This is the most used and most basic type of Lan Cable. The cable contains pairs of wires twisted together to help reduce and prevent electromagnetic interference.

STP cables are similar to UTP cables, where the wires are twisted together and then wrapped with a shielding or screening material which consists of foil wrapping or a copper braiding jacket.

With FTP cables, each twisted pair of cables is wrapped in a shielding of foil to protect the cable from EMI and crosstalk.

A cable that is classified as S/FTP or Shielded Foil Twisted Pair is a combination of both FTP and STP shielding. The wires inside the cable are twisted and then shielded with a foil wrapping, then the 4-pair grouping of foiled wires are shielded by a wrapping of either foil or a flexible braiding screening.S/FTP provides the highest level of protection against EMI and crosstalk.If you still have further questions,please feel free to contact SZOPT immediately.