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What is PoE?

Power over Ethernet

Power over Ethernet (PoE) makes it possible to supply network-compatible devices such as cameras or access points with power directly via the network cable.


Supplying large networks with power or implementing new devices in them sometimes poses challenges in terms of the required power supply. Network-compatible devices sometimes only require a small amount of power, which is why a lot of reactive power is generated by the power supply units used, which cannot be utilised by them. Furthermore, existing server rooms often do not have additional sockets to expand a network in a meaningful way. The standardised Power over Ethernet (PoE) method provides a remedy for such problems.

How is the energy transmitted via the Ethernet cable?

Data and power for the energy supply are transmitted together via a cable to the end device (typically IP telephones, access points or IP cameras). Ethernet cables are eight-core. With older network standards, PoE uses two of the wire pairs not used for data transmission. With older PoE standards, two of the wire pairs not used for data transmission are used. With newer standards, which also provide more power, the power is fed in via four wire pairs.

PoE-capable distribution devices, known as power sourcing equipment (PSE), are required so that electricity can flow through the network at all. These can be divided into two categories: PoE switches and PoE injectors.
A PoE switch works like a normal network distributor, but with the difference that the ports also provide a power supply. Problems can sometimes occur if connected end devices are not PoE-compatible. Overvoltage and damage can then occur during operation. Injectors, on the other hand, can be used much more flexibly.

The PoE injector is connected between a conventional switch and the participants in the network. Data signals are therefore picked up by the distributor and only then fed in with additional power. This has the advantage that only those ports in the existing switch that really need the additional power supply need to be equipped with PoE.

Standards for Power-over-Ethernet (PoE)


As the functions of the end devices increase, so do their energy requirements, which is why there are several standards that provide different usable power. There are standardised power classes for this:

  • IEEE 802.3af (PoE) provides 15 W output power or up to 12.95 W at the end device. 
  • IEEE 802.3at (PoE+) provides 30 W output power or up to 25.5 W at the end device. 
  • IEEE 802.3bt (PoE++ or 4PPoE) delivers 90 W output power or up to 71.3 W at the end device.
Class Standard Output voltage Max. Output voltage during operation Max. Power supply (PSE) Minimum power withdrawal (PD)
0 IEEE 802.3af 36 - 57 V 350 mA 15,4 W 0,44 - 12,96
1 IEEE 802.3af 37 - 57 V 351 mA 4,0 W 0,44 - 3,84 W
2 IEEE 802.3af 38 - 57 V 352 mA 7,0 W 3,84 - 6,49 W
3 IEEE 802.3af 39 - 57 V 353 mA 15,4 W 6,49 - 12,95
4 IEEE 802.3at 42,5 - 57 V 600 mA 25,5 W 12,95 - 25,50
5 IEEE 802.3bt 42,5 - 57 V 2× 960 mA 45 W 40 W
6 IEEE 802.3bt 42,5 - 57 V 2× 960 mA 60 W 51 W
7 IEEE 802.3bt 42,5 - 57 V 2× 960 mA 75 W 62 W
8 IEEE 802.3bt 42,5 - 57 V 2× 960 mA 90 W 71 W

 

Simple expansion of existing networks


Probably the easiest way to retrofit your existing network with PoE is by integrating POE injectors or injector hubs. Thanks to PoE injectors, retrofitting is particularly easy and requires no changes to your existing network. This saves you time, money and effort.
  1. Simple retrofitting: PoE injectors make it possible to integrate PoE-capable devices into an existing network without having to replace the switch.
  2. Cost-efficient: You save the cost of installing separate power lines, as power and data are transmitted via the same cable.
  3. Flexibility in placement: PoE injectors allow devices to be used in locations without nearby sockets, such as on ceilings or outdoors.
  4. Plug-and-play: They are easy to install and require no special configuration - ideal for quick and uncomplicated implementations.
  5. Stability and safety: PoE injectors provide a reliable power supply with integrated protection mechanisms against overload, overvoltage and short circuit.
  6. Compatibility: They work easily with standard Ethernet cables and PoE-capable devices, regardless of brand or model.
InLine® PoE+ Gigabit network injector hub 8 port (8x PoE+), 1Gb/s, 19" 1U
InLine® PoE+ Gigabit network injector hub 8 port (8x PoE+), 1Gb/s, 19" 1U
  • 8-port PoE+ injector hub with up to 30 W power per port (total up to 240 W)
  • Supports IEEE 802.3af/at for PoE and PoE+ devices such as IP cameras & access points
  • Wireless design for noiseless operation in a 19" rack (1U)
  • Triple protection: overcurrent, overvoltage and overheating protection per port
  • High energy efficiency with over 91% efficiency in operation

The InLine® PoE+ Gigabit network injector hub is the ideal solution for upgrading existing networks to Power over Ethernet – without having to replace existing switches. The hub offers eight RJ45 ports for data and power supply in accordance with IEEE 802.3af (PoE) and IEEE 802.3at (PoE+), each with up to 30 watts of output power per port. This allows network devices such as IP cameras or WLAN access points to be operated flexibly and independently of a power socket.

With a combined total PoE output of up to 120 watts via the power supply unit or 240 watts via the screw terminal connection block, the injector hub is particularly powerful. The integrated protection function against overcurrent, overvoltage and overheating offers additional safety in professional network operation. Thanks to its fanless design, the device operates silently and is ideal for installation in offices or technical rooms.

The standard-compliant support of 10/100/1000Base-T enables flexible integration into a wide range of network infrastructures. LED indicators provide information on the operating status and active PoE connections at all times.

Technical specifications:

  • Ports DATA IN: 8x RJ45 10/100/1000Base-T, Auto-MDI/MDI-X
  • Ports DATA + PWR OUT: 8x RJ45 10/100/1000Base-T, Auto-MDI/MDI-X
  • PoE type: Endspan
  • PoE output: 48–56 V DC, max. 30 W per port
  • Total power: 120 W (240 W via screw terminal connection block)
  • Standards: IEEE 802.3, 802.3u, 802.3ab, 802.3af, 802.3at
  • Voltage input: 100–240 V AC, 47–63 Hz
  • Output voltage/current: 56 V DC / 2.2 A
  • Power consumption in idle mode: 0.16 W
  • Energy efficiency: 91.4%
  • LED indicators: PWR, PoE (1–8)
  • Dimensions: 188 x 120 x 44 mm
  • Weight: approx. 1.521 kg
  • Operating temperature: 0–40 °C
  • Storage temperature: -20–70 °C
  • Humidity: 20–95 %, non-condensing

Scope of delivery:

  • 1x InLine® PoE+ Gigabit network injector hub 8 port
  • 1x power supply
  • 2x operating instructions (German/English)
  • 2x 19" mounting bracket
  • 6x screws for mounting bracket
  • 4x rubber feet
Item no.: 32308H

InLine® PoE+ Gigabit Network Switch 24 port,1 Gb/s, 2xSFP,19"1U (incl. brackets)
InLine® PoE+ Gigabit Network Switch 24 port,1 Gb/s, 2xSFP,19"1U (incl. brackets)
The InLine® PoE+ Gigabit Network Switch is a fast and flexible solution for upgrading the existing network to the IEEE 802.3af / IEEE 802.3at Power over Ethernet system as well as a fiber-optic connection to bridge longer distances. The switch provides protection against, for example, overload, overvoltage and overheating at each port. In addition, the switch offers both IEEE 802.3af and IEEE 802.3at PoE+ with up to 32 watts of power per port via single Cat. 5/5e/6 Ethernet cable with a PoE budget of 380W and a combined total power of 420 watts. 24x 10/100/1000Mbps PoE+ ports solve the problem of a limited number of available power outlets, providing system administrators with a flexible solution to power almost anywhere the powering network device, such as PoE-enabled IP cameras or wireless access points.The LC display not only shows the operating state of the PoE port, but also the state of each port, such as e.g.: Output power, overload, short circuit, low workload, undervoltage, overvoltage, overheating, etc. These includes, for example:
  • Switch mode (Normal, VLAN (the switch supports the isolation of each port, but each port can still communicate with the uplink port), CCTV (the switch supports a maximum distance of 250 meters with a transmission speed of 10Mbps.
  • Switch bandwidth
  • PD type (PD=powered devices): Enhance: PD supports no PoE according to IEEE802.3at/af, Standard: PD supports PoE according to IEEE802.3at/af, Legacy: Using a Cisco-PD with ist own PoE standard
  • PD Reboot by deactivating/activating the corresponding port
  • PSE power fine (PSE=power supply equipment): This feature can increase the overall performance of the PoE budget
  • PSE port priority: Here you can set the PoE prioritization per port between high, medium and low
  • PSE port enable: Through this every individual port can be activated / deactivatedPSE port power: With this function, the PoE power can be selected in steps of 2W between 8W-32W
  • Fan control: This function gives you the option of specifying fan operation. You can choose from "Always On", "20% PB" (when the switch spends 20% of its power budget), and "40% PB".
Specifications
  • Standards: IEEE 802.3 10Base-T, IEEE 802.3u 100Base-TX, IEEE 802.3ab 1000Base-T,IEEE 802.3z 1000BASE-X Gbit/s Ethernet over Fiber-Optic, IEEE 802.3x Full Duplex and flow control, IEEE 802.3af Power over Ethernet, IEEE 802.3at Power over Ethernet Plus
  • Ports: 24x 10/100/1000Base-T RJ45, Auto-MDI/MDI-X, 2x 1000Mb/s SFP
  • PoE ports: 1-24
  • PoE budget: 380W
  • Total output: 420W
  • LCD display: Real-time display of PoE operating status
  • PoE output power: Max. 32 watts per port
  • LED indicators: PWR, LNK/ACT PoE
  • Network cable: 10BASE-T: UTP Category 3, 4, 5 cable (100m)
  • 100BASE-TX: UTP Category 5, 5e cable 100m)
  • 1000BASE-T: UTP Category 5, 5e cable (100m)
  • 1000BASE-SX: MMF, SMF
  • MAC address table: 8K, automatic learning, automatic updates
  • Jumbo Frame: 9216 Bytes
  • Packet buffer: 4.1Mbit
  • Transmission method: Store-and-forward
  • Packet forwarding rate: 38.69Mpps
  • Bandwidth: 52G
  • Number of fans: 3
  • Dimensions (W x D x H): 440x232x45mm
  • Weight: appr. 3.7kg
  • Mains input: 100~240V AC, 50/60Hz
  • Environmental conditions: Operating temperature -10-60°C, storage temperature -40-70°C, humidity in operation 10-90% non condensing, humidity during storage 5-90% non condensing
  • Surge protection: ± 6KV
Content of delivery:
  • 1x InLine® PoE+ Gigabit Network Switch
  • 1x user manual (German/English)
  • 1x power cable
  • 2x 19" mounting brackets
  • 8x screws for the mounting brackets
  • 4x rubber feet
Item no.: 32324P

InLine® PoE+ Gigabit Network Switch 5 Port (4x PoE+), 1xSFP, 1Gb/s, desktop
InLine® PoE+ Gigabit Network Switch 5 Port (4x PoE+), 1xSFP, 1Gb/s, desktop

The InLine® Gigabit Network Switch 5 Port (4x PoE+), 1xSFP, offers a fast network connection as well as PoE+ support on 4 of the 5 ports. The SFP port supports SFP modules with a bandwidth of 1.25 Gb/s. The 5x 10/100/1000Mb/s auto-negotiation RJ45 ports all support Auto MDI/MDIX.

The switch is an easy-to-use and powerful solution to upgrade your old network to a Gigabit network and to power PoE-enabled devices such as IP cameras, IP phones, access points, etc. via the connected patch cable.


  • Standards: IEEE 802.3 10Base-T, IEEE 802.3u 100Base-TX, IEEE 802.3ab 1000Base-T, IEEE 802.3z 1000Base-X, IEEE 802.3x Flow control, IEEE 802.3af Power over Ethernet, IEEE 802.3at Power over Ethernet Plus
  • Ports: 4x 10/100/1000Base-T RJ45, Auto-MDI/MDI-X, PoE+ support 1x 10/100/1000Base-T RJ45, Auto-MDI/MDI-X 1x 1000Base-X SFP port
  • Three modes: Normal operation, VLAN port isolation (ports 1-4), range extension up to 250 metres via patch cable at 10 Mb/s (ports 3 and 4)
  • PoE Type of power supply: Endspan
  • PoE output voltage: Per port 52V DC
  • PoE output power: Per port max. 30 watts
  • Total power: 65 watts
  • LED indicators: Power, mode, port (1-6)
  • Dimensions (W x D x H): 20.2 x 12 x 4.5 cm
  • Weight: approx. 616 g
  • Power consumption: 100-240V AC, 50/60 Hz
  • Ambient conditions: Operating temperature 0-40°C, storage temperature -20-70°C, humidity 20-95% non-condensing

Content of delivery:

  • 1x InLine® PoE+ Gigabit Network switch
  • 1x manual (German/English)
  • 1x power cable
  • 4x rubber feet
Item no.: 32305R

InLine® PoE+ Gigabit Network Switch 24 port, 1 Gb/s, 2xSFP,19"1U(incl. brackets)
InLine® PoE+ Gigabit Network Switch 24 port, 1 Gb/s, 2xSFP,19"1U(incl. brackets)
The InLine® PoE++ Gigabit Network Switch is a fast and flexible solution for upgrading the existing network to the Power over Ethernet System IEEE 802.3af / 802.at / 802.3bt as well as a fiber-optic connection to bridge longer distances.

The switch provides protection against, for example, overload, overvoltage and overheating at each port. In addition, the switch offers IEEE 802.3af/at PoE+ on ports 5-16 with up to 32 watts of power and IEEE 802.3bt PoE++ on ports 1-4 with up to 60 watts of power via single Cat. 5e/6/6A/8.1 Ethernet cable with a PoE budget of 300W and a combined total power of 330W.

16x 10/100/1000MBit/s PoE ports solve the problem of a limited number of available power outlets, providing system administrators with a flexible solution to power almost anywhere the powering network device, such as PoE-enabled IP cameras or wireless Access Points (with heating also).

The switch menu can be password protected to prevent unauthorized access.

- Standards:
IEEE 802.3 10Base-T, IEEE 802.3u 100Base-TX, IEEE 802.3ab 1000Base-T, IEEE 802.3z 1000Base-SX Gbit/s Ethernet over Fiber-Optic, IEEE 802.3x Full Duplex and flow control, IEEE 802.3af Power over Ethernet, IEEE 802.3at Power over Ethernet Plus, IEEE 802.3bt Power over Ethernet ++, IEEE 802.3az Energy Efficient Ethernet
- Ports: 16x 10/100/1000Base-T RJ45, Auto-MDI/MDI-X, 2x 1000Mb/s SFP
- PoE ports: 16 (PoE++ 1-4 / PoE+ 5-16)
- PoE budget 300W
- Total output: 330W
- LCD display: Real-time display of PoE operating status
- PoE output power: Port 1-4 max. 60W, port 5-16 max. 32W
- Network cable: Cat. 5e/6/6A/8.1 cable (≤ 100m)
- 1000Base-X: MMF, SMF
- MAC address table: 8K, automatic learning, automatic updates
- Jumbo Frame: 9216 Bytes
- Packet buffer: 4.1Mbit
- Transmission method: Store-and-forward
- Packet forwarding rate: 26.78 million packages per second
- Bandwidth: 36Gbit
- Number of fans: 3
- Dimensions: (W x D x H): 440x232x45mm
- Weight: approx. 3.2kg
- Mains input: 100~240V AC, 50/60Hz
- Environmental conditions:
Operating temperature -10-60°C, storage temperature -40-70°C, humidity in operation 10-90% non condensing, humidity during storage 5-90% non condensing
- Surge protection: ± 6KV
Item no.: 32316P

InLine® PoE+ Gigabit Injector Hub 16 Port PoE+, 19"1U, brackets included, 2 fans
InLine® PoE+ Gigabit Injector Hub 16 Port PoE+, 19"1U, brackets included, 2 fans
The InLine® PoE+ Gigabit Network Injector Hub is a fast and flexible solution for upgrading the existing network to Power over Ethernet according to IEEE 802.3af / IEEE 802.3at without replacing existing switches. The injector hub provides triple protection against overcurrent, overvoltage and overheating at each port. In addition, the Injector Hub offers both IEEE 802.3af PoE and IEEE 802.3at PoE+ with up to 30 watts of power per port via a single Cat. 5 / 5e / 6 Ethernet cable with a combined total power of 250 watts. Sixteen 10/100/1000MBit/s PoE+ ports solve the problem of a limited number of available sockets and offer system administrators a flexible solution for operating the network device to be supplied with power, such as PoE-capable IP cameras or wireless access points, almost everywhere.
Technical characteristics
  • Standards: IEEE 802.3 10Base-T, IEEE 802.3u 100Base-TX, IEEE 802.3ab 1000Base-T, IEEE 802.3af Power over Ethernet, IEEE 802.3at Power over Ethernet Plus
  • Ports "DATA IN": 16x 10/100/1000Base-T RJ45, Auto-MDI/MDI-X
  • Ports "DATA + PWR OUT": 16x 10/100/1000Base-T RJ45, Auto-MDI/MDI-X
  • PoE type of power supply: Endspan
  • PoE output voltage: Per port 48~56V DC
  • PoE output power: Per Port max. 30 watts
  • Power pin assignment: 1/2(+), 3/6(-)
  • Total power: 250 watts
  • LED indicators: PWR, PoE (1-16)
  • Dimensions (W x D x H): 358x205x44mm
  • Weight: appr. 2.4 kg
  • Power requirement: 100~240V AC external power adapter
  • Operating environment: Operating temperature 0-40°C, storage temperature -10-70°C, humidity 20-95% non-condensing

Content of delivery
  • 1x InLine® PoE+ Gigabit Network Injector Hub 16 Port
  • 2x User manual (German/English)
  • 1x Power supply
  • 2x 19" mounting brackets
  • 6x Screws for the mounting brackets
  • 4x Rubber feet
Item no.: 32316H

The right cable


Another very important aspect for an error-free and resilient PoE network is the selection of the correct cable; before installation, you should consider the cable length, the wire cross-section and the possible heating of the network cable. The higher the current flow, the more heat is generated by the resistance in the cable. This can impair data transmission. It is therefore important to check in advance what load the cable can withstand and how the heat generated can be safely dissipated. The higher the wire cross-section (AWG number), the more resilient the cable.
InLine® Patch Cable S/FTP PiMF Cat.6A halogen free 500MHz grey 5m
InLine® Patch cable, S/FTP (PiMf), Cat.6A, halogen-free
Patch cable in the highest quality for a professional cabling in Gigabit and 10 Gigabit range, for use in data centers and server racks
  • Assignment according to TIA/EIA 568B2.1
  • cable construction S/FTP (PiMf) 4x2xAWG26/7
  • overall braided shield with paired foil shield
  • Cable sheath halogen free, LSZH, conform to standards IEC 60332-1-2, IEC 60754-1, IEC 60754-2, IEC 61034 IEC332-1
  • plug RJ45 (8P8C) with 50µ" gold plated contacts and with special design and latch protection
  • blue colored plug for easy distinction
  • For Gigabit and 10 Gigabit applications
  • to 500MHz: 100% Cat.6 test and 100% Cat.6A test (Fluke Channel Link Test) including the attached test protocol and serial number
  • in reclosable PE bag with EAN code

 

InLine® Patch Cable S/FTP PiMF Cat.6 250MHz copper halogen free grey 5m
InLine® Patch Cable S/FTP PiMF Cat.6 250MHz copper halogen free
Category Cat.6 twisted pair network cable with halogen-free sheath for connecting network components with RJ45 connections, such as switches, routers, sockets, patch panels and network cards. Suitable for gigabit connections (1Gbps) at a frequency of max. 250Mhz
  • 2x RJ45 (8P8C) moulded
  • Moulded boot and latch protection
  • Red coloured RJ45 plug for the quick differentiation
  • S/FTP cable, Cat. 6, AWG27, halogen free sheet LSOH
  • Full copper wires
  • Overall braid shielding and PiMf - pairs in metal foil (formerly named: S-STP PiMf)
  • With length indication on the plug
  • 1:1 pin assignment according to EIA/TIA 568B
  • Gigabit compatible
  • In a reclosable PE bag with EAN code, ideal for the shop wall

 

InLine® Patch Cable S/FTP PiMF Cat.6 250MHz PVC copper grey 5m
InLine® Patch Cable S/FTP PiMF Cat.6 250MHz PVC copper
Category Cat.6 twisted pair network cable for connecting network components with RJ45 connections, such as switches, routers, sockets, patch panels and network cards. Suitable for Gigabit connections (1Gbps) at a maximum frequency of 250Mhz.
  • 2x RJ45 (8P8C) moulded
  • Moulded boot and latch protection
  • Red coloured RJ45 plug for the quick differentiation
  • S/FTP cable, Cat. 6, AWG27, PVC sheet
  • Full copper wires
  • Overall braid shielding and PiMf - pairs in metal foil (formerly named: S-STP PiMf)
  • With length indication on the plug
  • 1:1 pin assignment according to EIA/TIA 568B
  • Gigabit compatible
  • In a reclosable PE bag with EAN code, ideal for the shop wall

 

InLine® Patch cable slim, Cat.6A, S/FTP, TPE (LSZH) flexible, PoE, grey, 5m
InLine® Patch cable slim, Cat.6A, S/FTP, TPE (LSZH) flexible, PoE
  • Space-saving design for maximum port density: Approx. 40 % less space required than conventional AWG26 patch cables – ideal for network cabinets and server rooms.
  • High-quality copper conductors for maximum performance: Full Cat.6A transmission quality with up to 10 Gbit/s over lengths of up to 30 meters.
  • PoE support up to 87 watts (4PPoE): Enables energy-efficient operation of IP cameras, access points or VoIP telephones without additional power supply units.
  • Sustainable & economical: Approx. 25% material savings reduce transportation and manufacturing costs and improve the CO₂ balance.
  • Flexible, safe TPE sheath (LSZH): Flame-retardant, halogen-free and particularly flexible for narrow installation paths.

The InLine® Slim Cat.6A S/FTP patch cable series combines highest network performance with maximum space and energy efficiency. Thanks to the particularly slim design with AWG28 conductors, these cables enable a significantly higher port density in network cabinets and ensure improved air circulation, which increases cooling and efficiency.

In contrast to conventional, thinner AWG32 cables, this cable supports full Cat.6A transmission quality at up to 500 MHz and 4PPoE with up to 87 watts. This makes it the ideal solution for professional applications where a combination of space-saving, PoE capability and high performance is required.

The use of high-quality copper conductors minimizes signal loss and ensures a reliable network connection - even over distances of up to 30 metres. The S/FTP double shielding reliably protects the cable from electromagnetic interference.

In addition to its technical performance, this cable also offers ecological benefits: Approx. 25% less material used reduces transportation costs and, in the long term, environmental taxes in accordance with future Green Law requirements.

The TPE sheath (LSZH) combines flexibility with fire protection: It is halogen-free, flame-retardant and ensures minimal smoke development in the event of fire – ideal for safety-critical applications.

Additional technical specifications:

  • Conductor material: Pure copper
  • Cable construction: S/FTP (pair and overall shielding)
  • Sheath material: TPE (LSZH – Low Smoke Zero Halogen)
  • Wire gauge: AWG28
  • Operating temperature: -20 to +75 °C
  • Outlet diameter: 4.1 mm
  • Population: 1:1 according to T568B
  • PoE support: Yes, up to 87 watts (4PPoE)

 

InLine® Patch cable, S/FTP (PiMf), Cat.8.1, 2000MHz, halogen-free, grey, 5m
InLine® Patch cable, S/FTP (PiMf), Cat.8.1, 2000MHz, halogen-free, copper
  • Cat.8.1 Network patch cable, round cable, up to 40Gb/s compatible
  • S/FTP PiMF
  • Plug black
  • PIN Gold plate 50µ"
  • 26AWG
  • Conductor: Copper
  • AL-MG braid
  • Pin out: TIA/EIA568B
  • Jacket: LSZH
  • ISO/IEC 11801 Class I 2000Mhz
  • Fluke Channel Test ISO 11801 channel Class I
  • IEC60754-2 IEC 61034
  • Support PoE per IEEE 802.3af, PoE+ per IEEE 802.3at
  • Plug Contacts durability: 750 cycles min
  • Operating Temperature: -10 ~+60°C

 

General information
How is the energy transmitted?
Standards
Simple expansion
The right cable
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