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Ethernet PoE transmission relies entirely on cables, so every PoE device used for connectivity requires other ports such as RJ45, PoE and LAN ports. It is because of the cable configuration that it is also known as wired networking. Letting devices power interoperability and share network data over the line, the Ethernet cable provides a faster, more reliable and stable connection.Because it is compared with RF signals wireless connection,wired connection devices are physically connected without interference, currently used for Ethernet PoE transmission there are twisted-pair copper and fiber optic cables are already very popular.
Ordinary network wired connection is relatively simple, but the configuration of Ethernet cable will need to consider a little more, taking into account the different standards, speeds and specifications between PoE devices. Network cables are divided into different categories, the basic standard is Cat-5. different PoE cable categories have different specifications and speeds:
| Type | CAT-5 | CAT-5e | CAT-6 | CAT-6a | CAT-7 | CAT-8 |
| Rate | 100Mbps | 1 Gbps | 10 Gbps | 10 Gbps | 10 Gbps | 25/40 Gbps |
| Transmission Distance | 100 meters | 100 meters | 100 meters | 100 meters | 100 meters | 30 meters |
| Frequency | 100 MHz | 250 MHz | 500 MHz | 1000 MHz | 1000 MHz | 2000 MHz |
| Line Features | Shielded/Unshielded | Shielded/Unshielded | Shielded/Unshielded | Shielded/Unshielded | Shielded | Shielded |
| Application | Small office/ Home | Large Enterprise, High Speed Applications | Large Enterprise, High Speed Applications | Large Enterprise, High Speed Applications | Data Center, High Speed and Bandwidth Intensive Applications Data Center, | Data Center, High Speed and Bandwidth Intensive Applications Data Center, |
Purity of Copper and Signal Loss in Ethernet cable
The Ethernet cable use copper to transmit network signals, copper is one of the common materials with high conductivity, we do not recommend using copper clad aluminum cables because aluminum expands and contracts as the temperature rises and cools, the stability and durability of the effect is not as good as it could be, whereas oxygen-free copper wires are made from copper with a purity of more than 99.95%, which is more stable, durable and has higher conductivity.
Shielded or Unshielded
Should I choose shielded or unshielded for Ethernet cable? Shielded cables, also known as Shielded Twisted Pair (STP), are designed for use in environments where there is a lot of electromagnetic interference and are designed to reduce the effects of external electromagnetic interference on data transmission, such as large server rooms. Unshielded cable or unshielded twisted pair (UTP) is more suitable for environments with less crosstalk or interference. For example, most homes and small businesses. These cables are more flexible, easier to use, smaller, and less expensive to purchase and manufacture.
