Author Archives: Laura.Yu

PoE Switch VS. PoE+ Switch, Which Will You Choose?

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Many people choose to install POE (Power over Ethernet) switches for enterprise or home use. PoE technology is time-saving and money-saving for cable installation by carrying electrical power over network cable. In the market, if you are careful enough you can find some are marked as PoE switch and some are PoE+ switch. What’s the difference between these two switch? Can we use PoE switch vs. PoE+ switch? Find answers in the following article.

IEEE802.3af (PoE) and IEEE802.3at (PoE+) Standards

To answer this question , we have to learn these IEEE802.3af (PoE) and IEEE802.3at (PoE+) standards. IEEE802.3af standard was established in 2003, upgraded to IEEE802.3at in 2009. IEEE802.3af standard supports the network devices that require up to 13 W of electrical power. But it can’t meet the power needs of many devices. Therefore, IEEE802.3at standard was promoted to offer more power for high-power PoE devices, for instance, cameras with high-power IR illuminators, IP telephones, small network printers etc. The big difference between IEEE802.3af and IEEE802.3at is the maximum amount of power they provide over Cat5 cable. The maximum amount of power for the 802.3af standard is 15.4 W and the maximum for the 802.3at standard is 30 W. PoE switch and PoE+ switch are designed based on different IEEE standards.

PoE Switch VS. PoE+ Switch: What’s the Difference?

Let’s compare these switches: S1130-8T2F and S1250-8T2F. S1130-8T2F is an 8 port PoE switch with 2 SFP ports. S1250-8T2F is an 8 ports Gigabit PoE+ managed switch with 2 SFP ports. At first glance, these two switches look the same. Actually one is PoE switch and the other is PoE+ switch.

PoE switch vs.poe+ switch

Obviously, by comparison of above two types of switches, switching capacity, RJ45 ports and SFP+ ports, all are the same, except max. power consumption. The max. power consumption of S1130-8T2F is 130W while the S1250-8T2F is 250W. Max. power consumption of PoE switch is smaller than that of PoE+ switches.

PoE Switch v PoE+ Switch? Which One Should We Choose?

Many users may encounter this problem. Should we choose PoE switch or PoE+ switch? PoE network switch is cheaper. But PoE+ switch have some advantages over PoE switch.

  • More electrical power–PoE+ switch can provide 30W, nearly half of the electrical power to powered devices more than PoE switch.
  • Smart power budgeting–PoE+ switch includes scope for power sources and powered devices to communicate with each other to negotiate an allowance of electrical power.
  • PoE+ switch can support a more complete range of network equipment, including IP cameras with heater/blowers, and multichannel wireless access points.

To help you make better decision, I’ll take two types of 24-port switches as an example: S1400-24T4F PoE switch and S1600-24T4F PoE+ switch.

S1400-24T4F S1600-24T4F
24-port-poe-switch 24-port-poe+ switch
S1400-24T4F is a 24-port Gigabit PoE managed switch with 4 SFP ports, 400W. It’s compliant with IEEE 802.3af/at. It’s a good solution for SMB or entry-level enterprise which demands industrial, surveillance, IP Phone, IP Camera or Wireless applications. S1600-24T4F is a 24-port Gigabit PoE+ managed switch with 4 ports, 600W. It’s compliant with IEEE 802.3af/at, supporting the connection to VoIP phones, wireless APs and IP surveillance cameras for intelligent switching and networks growth. S1400-24T4F and S1600-24T4F support both 802.3af/at standards. They can fully allocate IEEE802.3af powered devices, and half allocate the IEEE802.3at powered devices. There aren’t too many differences between the two switches. S1400-24T4F is cheaper and S1600-24T4F provide more electrical power. Well, to choose S1400-24T4F (PoE switch) or S1600-24T4F (PoE+ switch), the decision depends on your needs and budgets. PoE switch is still employed by many users.

Can We Connect PoE Access Point with a PoE+ Switch?

PoE+ is compatible with PoE. POE+ switches can recognize 802.3af powered devices and enable PoE to them as normal. PoE+ powered devices can also be connected to 802.3af PoE switches, and are supposed to restrict how much power they use accordingly. As the above show, S1400-24T4F PoE switch and S1600-24T4F PoE+ switch are compatible with 802.3af/at standards. So can we connect a PoE access point with a PoE+ switch? The answer is yes. PoE Switch VS. PoE+ Switch: Do you get the difference between them now? Hope this article is helpful.

Related Article:PoE Switch vs. PoE Injector vs. PoE Splitter

One LC Switchable Uniboot Cable Removes All Your Problem

Suppose that you need some LC fiber patch cords to build a data center and now there are common LC patch cable and LC switchable unibboot cable. What kind of cable will you choose? Considering the cost, you may select common LC patch cords. But think about that for a while, you may make the different choice. Let’s see why you need LC switchable uniboot cable.

LC Switchable Uniboot Cable: Switch Polarity Easily and Quickly

Have you ever changed polarity when running fiber patch cords? How long did you spend on finishing that? Did you make any mistake? Polarity is quite a complicated thing. Engineers must be very careful to ensure that the transmit signal (Tx) at one side should match the corresponding receiver (Rx) at the other side. If polarities don’t match, signal transmission may get impacted. Then how to do polarity conversion in an easy and quick way? LC switchable uniboot cable is your option.

duplex-cords-polarity

LC Switchable Uniboot Cable Help You Do Easy Polarity Conversion

We all know that polarity conversion of traditional LC cables would require to re-terminate connector. It takes much time and leads mistakes. What’s more, you need special tool to finish that process. Unlike common LC patch cords, this switchable uniboot cable supports the polarity to be switched without connector re-termination. Polarity changes can be made in the field quickly, without the use of tools, to the correct fiber mapping polarity. No damage to fiber.

lc switchable uniboot cable

How to Reverse the Polarity of LC Switchable Uniboot Cable?

To reverse polarity, you just need three steps. First, open the connector top. Second, switch the polarity you need. At last, close the connector top. No tools are needed during the whole process. Isn’t the LC switchable uniboot cable a good choice?

lc-switchable-uniboot-polarity

LC Switchable Uniboot Cable Is Good for Saving Space and Cooling

Except the polarity issue, engineers may come across the problem of limited space and airflow when building infrastructure in high density data center. How to deal with that? Switchable uniboot cable is absolutely a good choice. The cable is designed as round style of 2mm jacked cables instead of zipcord duplex cables, reducing cable size and increasing 60% density. So switchable uniboot cable is beneficial for saving space and cooling.

lc-uniboot-vs-standard

What Should Notice When Buying LC Switchable Uniboot Cable?

LC switchable uniboot cable is helpful to simplify switching polarity, save space, which is an ideal solution for high density data center. In case that you need, here are some suggestions for you When buying LC switchable unibboot cable.

  • 1. Connector is an essential factor. If the connector has a poor quality, it can cause optical loss. You are suggested to choose Senko connector which is famous for its high quality.
  • 2. For patch cords, the other important factor is fiber. As we know bending sometimes inevitable. Corning fiber is outstanding for its bending insensitivity. For single mode fiber, the minimum bend radius is 10mm. For multimode fiber, the minimum bend radius is 7.5mm.
  • 3. Pay attention to insertion loss (IL) and return loss (RL) for single mode and multimode cable.
  • 4. Find if the cable meets various standards, for instance, CE, IEC, ROSH, EIA/TIA, Telecocordia GR-326-CORE standards.
  • 5. LC uniboot patch cable price is of course another point you care much. So find several uniboot lc cable manufacturers to compare the price and choose the one you accept.

Related Article: LC Fiber Connector, Adapter and Cable Assemblies

Change Polarity in a Hurry? Try Polarity Switchable LC Cable!