24 Port PoE Switch Power Consumption: 370W vs 740W

When purchasing a 1G PoE switch, we typically focus on the number of ports. However, power consumption is usually linked to port numbers to meet various wattage requirements. For example, a small 8-port PoE switch may offer options of 130W or 240W. A high-density 48-port PoE switch may provide up to 740W of power. Therefore, a medium-sized 24-port PoE switch with appropriate power consumption would be a viable solution for wide network applications.

Since PoE switches fail to provide sufficient power for Powered Devices (PDs) leads to low performance or random disconnections. On the other hand, for cost-effectiveness, choosing a 24-port PoE switch with an excess power budget would be a waste of money. This article will discuss PoE switch power consumption and recommend two 24-port PoE switches with different power consumption: 370W vs 740W, for your consideration.

24 Port PoE Switch Power Consumption Explanation

Total Power Consumption

The power consumption of a 24-port PoE managed switch refers to the maximum total power that the 1G PoE switch can supply to all connected PDs. In simpler terms, the total power wattage of all connected PDs must not exceed the power consumption of the 24-port PoE switch. Hence, before deciding on which power consumption PoE switch to purchase, it is essential to calculate the total power wattage of the PoE-powered devices that need to be used.

Per Port Power Consumption

Another crucial parameter of the 24-port PoE switch is the power consumption per PoE port, which is defined by either the PoE standard (IEEE802.3af) or the PoE+ standard (IEEE802.3at). A switch compliant with the PoE standard can deliver up to 15.4W of output power per port, while the PD receives 12.95W of input power due to transmission loss. Similarly, for a PoE+ switch, the corresponding figures are 30W and 25.5W, respectively.

24 port PoE switch power consumption PoE standard

Figure 1: 24 port PoE switch power consumption PoE vs PoE+ standard comparison.

24 Port PoE Switch 370W vs 740W Power Consumption Comparison

The power consumption of 370W and 740W in 24-port PoE switches caters to different levels of power wattage. Taking the S3400-24T4FP 370W and S3410-24TS-P 740W PoE switches as examples, let’s compare the scenario when fully loading these two 24-port 1G PoE switches with IP cameras. Dividing 370W and 740W by 24, we get per-port power consumption of 15.42W and 30.83W respectively. This means the 740W power consumption 24-port PoE+ switch can support 24 higher-power IP cameras compared to the 370W switch. The suggestion is: If you need to use a large number of higher-power PDs, then the 740W 24-port PoE switch would be a safer and more forward-thinking choice.

Figure 2: FS 24 port PoE switch power consumption 370W vs 740W model comparison.

24 Port PoE Switch 370W vs 740W Recommendation

Here we recommend the aforementioned advanced FS 24-port PoE switches, namely the S3400-24T4FP 370W and S3410-24TS-P 740W, for your consideration. These 24-port 1G PoE switches comply with IEEE 802.3af/at standards, allowing them to distinguish between PoE and PoE+ standards to ensure precise power delivery. Consequently, the FS 24-port PoE switch can deliver up to 30W per port, making it ideally suited for security cameras, IP phones, and wireless access points (APs).

In addition to its high power consumption PoE capability, the FS 24-port PoE managed switch boasts multiple port configurations designed to seamlessly integrate into various networks. This PoE switch consolidates 24 RJ45 auto-sensing 10/100/1000Mb PoE ports, 2 1Gb SFP ports, and 2 SFP/RJ45 combo ports into a compact 1RU form factor. The 24 PoE ports can accommodate up to 24 PDs simultaneously connected to the switch within budget constraints. Furthermore, the 2 SFP ports offer optional fibre cabling and support link aggregation of multiple switches, while the 2 SFP/RJ45 combo ports further enhance network resiliency.


Power consumption is a crucial factor to consider when selecting a cost-effective PoE switch. When deciding between a 370W and a 740W 24-port PoE switch, it’s essential to determine the rated wattage of each PD and calculate the total power budget for all devices. Ensure that the power consumption per port of the PoE switch doesn’t exceed the requirements of individual devices or the maximum power threshold of the switch itself.

If the S3400-24T4FP 370W model doesn’t meet your current needs or anticipated expansion of access points, consider upgrading to the S3410-24TS-P 740W version. Regardless of your choice, you can trust that FS.COM offers competitive prices for 24-port PoE switches in the market.

Understanding Ports of Gigabit PoE Switch

Since introducing Power over Ethernet (PoE) technology, the PoE LAN switch has become popular among wide users. However, newbies are usually confused with the multiple port configuration on the gigabit PoE switch. Since there are already regular PoE Ethernet ports for powered devices (PDs), what are the functions of other ports like console port, SFP/SFP+ port and combo port on gigabit PoE switch? This article will take 8 port PoE switch, 24 port PoE switch and 48 port PoE switch as examples to illustrate multiple ports for your reference.

Console Port on Gigabit PoE Switch

Like regular Ethernet switches, gigabit PoE switch often has one built-in serial console port, FS S3150-8T2FP 8 port PoE switch. It is the port for controlling and managing a switch since there are no display devices for a switch. Usually, the console port on a gigabit PoE switch is an RJ45 receptacle. To connect a computer directly to the 8 port PoE switch, one should use a dedicated rollover cable rather than an Ethernet cable for connection. To use the console port, you need physical access to the appliance. Therefore for terminals without serial console ports, one should attach a corresponding adaptor to the devices before cabling.

Figure 1: A display of one console port on FS S3150-8T2FP 8 port PoE switch for control.

RJ45 Port vs SFP Port on Gigabit PoE Switch

RJ45 port on gigabit PoE switch is the regular PoE port to achieve data and DC power transmission for PDs. It is an auto-sensing 10/100/1000Mb copper port supporting only Ethernet cable (Cat5e/6/6a/7) for connection. Thus RJ45 port connection is limited to 1G speed and 100m (330ft) short-distance transmission. Then how about a longer-distance transmission scenario?

Different from RJ45 port, SFP port on gigabit PoE switch has the opt of both short and long reach. Why? The mini GBIC port has inherited the compatibility of either copper or optical SFP connection. Provided you employ the corresponding SFP module and cable on power over the Ethernet switch. For long-distance transmission, you should use fibre SFP modules with fibre patch cables for optical links. For short distances, you can opt to use an RJ45 SFP module with copper network cable on a gigabit PoE RJ45 switch for electrical links. Gigabit PoE switches often provide 2 SFP ports for optical connection or uplink aggregation requirements, which enhances the network adaption resiliency of PoE-powered switches. For instance, the S3410-24TS-P 24 port PoE switch has 2xSFP ports reserved, which caters for fibre uplink to upper layer switch.

Figure 2: A display of RJ45 ports vs SFP ports on FS gigabit PoE switch.

SFP+ Port on Gigabit PoE Switch

To illustrate the SFP+ port on a PoE Ethernet switch, we’ll take the S3400-48T4SP 48 port PoE switch as an example. This 48 port PoE gigabit switch comes with 1 console port, 48xPoE+ RJ45 ports and 4xSFP+ ports. The 48xRJ45 ports are PoE-ready to power dozens of IP phones, IP cameras and wireless APs. The 4xSFP+ ports on the gigabit PoE switch serve as uplinks to connect the 10G SFP switch for uplink aggregation.

Combo Port on Gigabit PoE Switch

Though manufacturers often clearly label combo ports on gigabit PoE switches for identification, many people don’t know its function. Take the S3410-24TS-P 24 port PoE switch as an example, 4xcombo ports are reserved on this 24 port PoE managed switch. The combo port compounds RJ45 and SFP front ends in one single interface, thus it supports either copper or optical SFP link. However, you cannot use these two physical accesses on the PoE network switch simultaneously. That is, once you activate the combo SFP port on the gigabit PoE switch, you also disable the opposite copper port.


To sum up, multiple ports on gigabit PoE switches own different functionality, which enhances switching resiliency for different network cabling. RJ45 port on PoE powered switch is a normal one for a copper link to PDs. SFP port of gigabit PoE switch provides options of fibre cabling or copper cabling due to fibre SFP module and RJ45 SFP module compatibility. 10G SFP+ port on 48 port PoE switch serves as an uplink port for link aggregation in the network layer. Combo port compounds RJ45 and SFP interface in one single fabric on a gigabit PoE switch. So it helps to extend the flexibility of physical access through the network. For 8/24/48 port cheap PoE switch buying, you can find a decent offer here with optimal port configuration.

FS 24-Port PoE Switch for High-density PoE Installations

Due to the increased requirements for IP surveillance networks, the appearance of PoE switches gives you an easy way to add PoE devices to the network. They are ideal for small business networks that need to inexpensively use PoE to deploy wireless access points, IP phones and IP cameras. The PoE switch models are available with 4, 8, 16, 24 or 48 ports, although other variants are also available. 24 port PoE switch is the most prevalent variant on the market. So why does your network need a 24-port PoE switch and how can the network benefit from deploying it? This article explains it in detail.

Why Your Network Needs A 24-Port PoE Switch?

When choosing an Ethernet switch, the most important is to check whether the number of ports on the switch is enough to connect all your devices. The same is true when choosing PoE as a switch. PoE ports are flexible to connect with Cat5e cable without additional settings. Generally, the PoE switch has uplink ports, which allow long-distance data transmission between switches. Switches without uplink ports can still be linked together but you may experience bandwidth issues with switch-to-switch data flow. A 24-port PoE switch fully complies with the IEEE 802.3af standard for PoE up to 15.4W per port and the latest IEEE 802.3at standard for PoE+ up to 30W per port.

On the whole, the 24-port PoE switch can greatly reduce the associated cost with smaller PoE installations in a home or small business environment. At the same time, it will allow you to expand your network to areas with no power lines. Essentially, the plug-and-play PoE switch will automatically detect whether connected devices are PoE and send power accordingly. For a 24-port PoE-managed switch with a power budget of 370W, you need a total power per port of 30W to power an IP camera network. And you can continue to add IP cameras until you reach your budget. If you have 2 SFP ports, you can also connect to multiple switches. Keep in mind, that if you exceed the power threshold and the devices aren’t getting sufficient power, they may not boot up properly. Finally, please ensure you cheque the power requirement for your PoE-enabled device, the standard it complies with and the overall PoE budget of your installation before purchasing a 24-Port PoE switch.

FS S3400-24T4FP 24-Port PoE Managed Switch – 4 x 1Gb Combo Uplinks, 370W

FS S3400-24T4FP managed PoE switch comes with 24 10/100/1000Base-T RJ45 Ethernet ports, 1 console port, and 4 combo ports for fibre uplinks. It offers network managers the advantage of connecting up to 24 power-hungry wireless access points, IP security cameras, LED lighting or VoIP endpoints to the network with a single wire for power and connectivity. With its robust PoE power budget of 370W, the S3400-24T4FP switch supports denser deployment of PoE devices. This switch has a 56Gbps switching capacity with an 8K MAC address table. The power supply is supportive as well, which is about 100-240V. This is a solidly built excellent switch from the firm with a data transfer rate of 1,000 Mb/s. It represents an ideal switching solution for even advanced SMBs or entry-level enterprises which demand industrial, surveillance, IP Phone, IP Camera or Wireless APs. All in all, the PoE switch provides security, performance, quality of services, central management and other network control capabilities.

Key Features:
  • Up to 24 PoE+ Ports, Total Budget 370W
  • 3 Built-in Fans and Single Power Supply
  • Support ERPS, QoS, OSPF, L2 Multicast Functions, RIP
  • Support SSH, ACL, AAA, 802.1X, RADIUS, TACACS+, etc. for Security
  • Advanced Network Monitoring Using SFlow
  • Support WEB/CLI/SNMP/SSH for Flexible Operation


PoE switch is a cost-effective solution to increase the reliability and security of networks by providing centralized backup power to all connected IP surveillance devices. Before purchasing PoE switches, try to know as many details about the switch specifications as possible and also your own needs. FS S3400-24T4FP managed PoE switch is an affordable switch to support SMB switching needs for wireless converged networks and IP surveillance. If you prepare for growth and buy infrastructure for the long term, you will find this 370W PoE power budget provides headroom for future expansion.

Related Article: Deploying 48-Port Gigabit PoE Managed Switch in Different Networks