以太网(Ethernet)电缆分路器可以通过一根物理电缆传输两个单独的以太网信号。(Ethernet)这有效地将一根电缆变成了两根电缆，并且它可能是一种有用的方法，可以将可以连接到单根电缆的设备数量翻倍。
但是，以太网(Ethernet)电缆分路器有缺点，因此了解它们的工作原理以及它们是否是满足您需求的解决方案非常重要。
以太网电缆分路器(Ethernet Cable Splitter Work)如何工作？
以太网(Ethernet)电缆分路器的一侧有两个以太网端口(Ethernet)连接器，另一侧有一个以太网(Ethernet)端口连接器。它的工作前提是 10 或 100 Mbps以太网(Ethernet)不使用您今天在家庭和企业中可以找到的典型CAT 5E电缆中的所有电线。(CAT 5E)通过将这些电缆内的电线分成单独的通道，分线器将一根 1000 Mbps电缆变成两根 100 Mbps电缆。
两种类型的以太网电缆(Ethernet Cable)分路器
最常见的以太网(Ethernet)电缆分路器创建两个数据连接。但是，您还会发现PoE（以太网供电(Power)）分离器。(Ethernet)该设备采用传入的PoE电缆并将数据从电源中分离出来，提供以太网(Ethernet)插头和直流桶形插头。当网络上的某些设备不支持PoE时，这是必要的。您仍然可以通过网络
为非PoE设备供电，而不是使用本地墙壁适配器。(PoE)
本文介绍的是数据分离器电缆。如果您需要两个数据连接，请确保您订购了正确的分离器，而不是PoE型号。
以太网
电缆(Ethernet Cable)分路(Pros)器的优缺点_(Cons)
以太网(Ethernet)电缆分路器有一些优势。首先(First)，它们价格便宜，因此它可以是一种廉价的拆分现有电缆的方法。其次，它们实施起来简单快捷。无需设置或配置——即插即用的解决方案。您也可以在紧要关头使用分路器作为临时以太网(Ethernet)耦合器来连接电缆，但您仍然会对潜在速度造成巨大影响，最好购买专用的有源耦合器。
最大的问题是速度。通过分离器的每个数据连接为 100Mbps。这意味着您的 1000Mbps 电缆最多可以传输 200Mbps。如果您不需要每台设备超过 100Mbps 的带宽，这可能并不重要。这对于 4K 流媒体来说绰绰有余，如果您的互联网连接低于 100Mbps，这也是一个有争议的问题。
另一个缺点是主电缆的每一端都需要一个分路器。因此，分离器不会为您节省路由器上的任何端口；它仍然占用两个端口。
电缆分路器替代品
总体而言，以太网(Ethernet)电缆分路器并不是一个很好的解决方案，尤其是在现代，千兆以太网(Gigabit Ethernet)是家庭LAN(LANs)（局域网(Local Area Networks)）的标准，并且超过 100Mbps 的宽带速度很常见。更不用说在端点处需要以太网(Ethernet)连接的设备通常不止两个。因此，在您从亚马逊(Amazon)订购一堆分离器之前，请考虑这些通常更优越的替代品。
无线接入点
无线接入点(wireless access point)连接到以太网(Ethernet)电缆并在其位置创建一个新的 Wi-Fi 网络。它通过以太网(Ethernet)连接提供互联网连接，但也有它的LAN。许多无线接入点还具有多个以太网(Ethernet)端口，您可以连接多个有线和无线设备，充分利用高速千兆以太网电缆。
最重要的是，您可能无需购买任何额外的东西来创建接入点。如果您身边有旧路由器，您可以将其配置为在 AP（接入点）模式下运行(configure it to run in AP (Access Point) mode)。很多人都将旧的DSL 调制解调器(DSL modem)路由器打包在某个地方。虽然设备的DSL 调制解调器(DSL modem)部分不再有用，但以太网集线器和Wi-Fi LAN组件仍然可以用作本地接入点。请注意，接入点与 Wi-Fi 扩展器不同，因此请确保您购买的是正确的产品。
电力线以太网
如果您想使用以太网分路器，因为安装了已安装的电缆，并且您不想撕毁干墙以安装更多电缆，那么一个很好的选择是电力线以太网(Powerline Ethernet)。该技术将您家现有的铜质电源线变成网络电缆。这工作的好坏取决于电缆的质量以及电路上运行的设备。理论上，您可以通过典型的电力线以太网(Powerline Ethernet)获得高达 600Mbps 的速度。在实践中，我们已经看到布线不良的 30Mbps 到现代家庭的 300Mbps 之间的任何东西。
电力线以太网(Powerline Ethernet)的优点在于，只要有插座，它们就可以提供多个以太网(Ethernet)端口，并且可以充当无线接入点，具体取决于您购买的产品。例如，这款 Netgear电力线(Powerline)适配器套件凭借其下一代AV2技术提供千兆级速度。(Gigabit-class)由于这些设备插入您的插座，您不必担心壁挂式解决方案。
网络交换机
网络交换机是比路由器更简单的设备。交换机只能将同一网络上的设备连接在一起，但不能单独提供互联网连接或跨网络连接。但是，您可以使用它在连接到路由器的延长电缆末端
提供多个以太网端口。(Ethernet)
以这款TP-Link TL-SG105 5 端口千兆(TP-Link TL-SG105 5 Port Gigabit )以太网交换机(Ethernet Switch)为例。只需不到 20 美元，您就可以将一个千兆以太网(Ethernet)端口插座变成五个，它们都可以有效地共享总带宽。这款小型无风扇以太网(Ethernet)非管理型交换机与以太网网络分离器一样即插即用，但没有任何妥协。
MoCA（同轴电缆多媒体）
电力线以太网(Powerline Ethernet)很棒，因为所有家庭都已经安装了电源线，但在某些地方，您还会发现整个家庭都安装了同轴线，用于传输电视信号。
例如，这款摩托罗拉 MOCA 适配器(Motorola MOCA Adapter)在现有同轴电缆上提供高达 1000Mbps 的速度。如果您已经在家中安装了同轴电缆并且拥有兼容 MoCA 的路由器（包括当今大多数FiOS路由器），这是一个值得选择的选择。如果没有，您还需要路由器端的适配器和要连接的每个设备的适配器。
最好的以太网分配器购买
如果您仍然认为RJ45 以太网(RJ45 Ethernet)分路器电缆是满足您需求的最佳解决方案，那么有一些不错的选择。几乎(Almost)任何分离器都可以完成这项工作，但如果您正在寻找长期解决方案，购买一对优质单元始终是一个好主意。
RIOUSV电缆分路器没有什么特别之处。每个单元上都有三个RJ45母端口，你需要两个，你要拆分的电缆的每一端一个，这样就可以正常工作了。
这是您购买此产品时获得的最显着优势，因为它是两件装的，因此每个分配器的价格为 6.50 美元。您需要一根 8 芯以太网(Ethernet)电缆，里面有 8 根电线。这意味着至少CAT5或更好的电缆。
Wuedozue分离(Wuedozue)器是一种奇怪的装置。虽然它看起来像一个无源分配器，通常需要两个分配器才能正常工作，但这只需要一个单元。它还需要USB电源才能工作，这表明这不是一个分离器，而是一个简单的双端口非托管以太网(Ethernet)网络交换机。
您需要提供USB(USB)电源（并且不包含USB电源）有点不利。尽管如此，您仍然可以获得快速的以太网(Ethernet)互联网速度；你只需要在你的路由器上使用一个端口，它并不比一对传统的分离器贵多少。
这不是(NOT)一个实际的RJ45分路器适配器。虽然看起来NOBVEQ将一个端口分成三个，但事实并非如此。虽然您可以将三台设备插入此适配器，但一次只有一台设备可以实际使用网络。
这似乎不是特别有用，但是如果您拥有三台设备，并且在任何给定时间只有其中一台处于开启状态，那么这可能是一个很好的解决方案。这是以太网(Ethernet)端口复制的利基市场，但我们可以看到一些计算机实验室或工作站设置受益于这种廉价的修复。
避免头痛
很明显，除非您试图节省每一分钱，否则购买传统的分离器并不是一个好主意。幸运的是，有许多比分离器以太网(Ethernet)适配器更好的选择可供选择，以将您的家庭网络扩展到需要它的生活空间的所有角落，而不会破坏您的连接速度。
What Are Ethernet Cable Splitters (and the Best Ones to Buy)?
Ethernet cable splitters can carry two separate Ethernet signals over a single physical cable. This effectively turns one cable into two, and it can be a useful way to double the number of devices you can connect to a single cable.
However, Ethernet cable splitters have downsides, so it’s important to understand how they work and if they’re the solution for your needs.
How Does an Ethernet Cable Splitter Work?
An Ethernet cable splitter has two Ethernet port connectors on one side and a single Ethernet port connector on the other. It works on the premise that 10 or 100 Mbps Ethernet does not use all the wires in the typical CAT 5E cables you’ll find in homes and businesses today. By splitting the wires inside these cables into separate channels, the splitter turns one 1000 Mbps cable into two 100 Mbps cables.
The Two Types of Ethernet Cable Splitters
The most common Ethernet cable splitter creates two data connections. However, you’ll also find a PoE (Power over Ethernet) splitter. This device takes an incoming PoE cable and splits the data from the power, providing an Ethernet plug and DC barrel plug. This is necessary when some devices on the network don’t support PoE. Instead of using a local wall adapter, you can still power non-PoE devices over the network.
This article is about data splitter cables. Make sure you order the right splitter, not a PoE model if you want two data connections.
The Pros and Cons of Ethernet Cable Splitters
Ethernet cable splitters have a few things in their favor. First, they are inexpensive, so it can be a cheap way to split an existing cable. Secondly, they are simple and quick to implement. There’s no setup or configuration—it’s a plug-and-play solution. You can also use a splitter as a makeshift Ethernet coupler in a pinch to join cables, but you’re still taking a huge hit to potential speeds and would be better off buying a purpose-made powered coupler instead.
The biggest issue is speed. Each data connection through a splitter is at 100Mbps. That means your 1000Mbps cable can carry a maximum of 200Mbps. This might not matter if you don’t need more than 100Mbps of bandwidth per device. It’s more than enough for 4K streaming and if your internet connection is less than 100Mbps, it’s also a moot point.
Another downside is that you need a splitter at each end of the main cable. So a splitter doesn’t save you any ports on the router; it still takes up two ports.
Cable Splitter Alternatives
Ethernet cable splitters aren’t a great solution overall, especially in modern times when Gigabit Ethernet is the norm in home LANs (Local Area Networks), and broadband speeds well over 100Mbps are common. Not to mention that more often than not there are more than just two devices at the end-point that need an Ethernet connection. So before you order a bunch of splitters from Amazon, consider these generally superior alternatives.
Wireless Access Points
A wireless access point connects to the Ethernet cable and creates a new Wi-Fi network at its location. It offers internet connectivity through the Ethernet connection but also has its LAN. Many wireless access points also have several Ethernet ports, and you can connect multiple wired and wireless devices, making the most of a high-speed gigabit ethernet cable.
Best of all, you may not have to buy anything extra to create an access point. If you have an old router lying around, you can configure it to run in AP (Access Point) mode. Plenty of people have old DSL modem routers packed away somewhere. While the DSL modem part of the device isn’t useful anymore, the ethernet hub and Wi-Fi LAN components can still work as a local access point. Note that access points are not the same as Wi-Fi extenders, so be sure you’re buying the right product.
Powerline Ethernet
If you want to use an Ethernet splitter because there’s an established cable installed and you don’t want to tear up the drywall to put in more, one great alternative is Powerline Ethernet. This technology turns your home’s existing copper power cables into network cables. How well this works depends on the quality of that cabling and what devices are running on the circuit. Theoretically, you could get as much as 600Mbps over typical Powerline Ethernet. In practice, we’ve seen anything between 30Mbps on poor wiring to 300Mbps in a modern home.
The great thing about Powerline Ethernet is that they can offer multiple Ethernet ports wherever there’s an outlet and can act as wireless access points, depending on what you buy. This Netgear Powerline adapter kit, for example, offers Gigabit-class speeds thanks to its next-generation AV2 technology. Since these devices plug into your outlets, you don’t have to worry about a wall mount solution.
Network Switches
A network switch is a simpler device than a router. A switch can only connect devices on the same network together, but it can’t provide an internet connection or cross-network connection by itself. However, you can use it to provide multiple Ethernet ports at the end of an extension cable connected to your router.
Take this TP-Link TL-SG105 5 Port Gigabit Ethernet Switch as an example. For less than $20, you can turn one gigabit Ethernet port outlet into five, which all efficiently share that total bandwidth. This small fanless Ethernet unmanaged switch is just as plug-and-play as an ethernet network splitter but without any compromises.
MoCA (Multimedia over CoAx)
Powerline Ethernet is great because all homes already have power cabling installed, but in some places, you’ll also find coaxial wiring installed throughout the home, meant to carry TV signals.
For example, this Motorola MOCA Adapter offers up to 1000Mbps over existing coaxial cabling. This is a worthwhile option if you already have coaxial cabling installed throughout your home and have a MoCA-compatible router, which includes most FiOS routers these days. If not, you’ll also need an adapter on the router-side and an adapter for every device you want to connect.
The Best Ethernet Splitters To Buy
If you still feel that an RJ45 Ethernet splitter cable is the best solution for your needs, there are a few good options. Almost any splitter will do the job, but buying a pair of quality units is always a good idea if you’re looking for a long-term solution.
There’s nothing exceptional about the RIOUSV cable splitter. Each unit has three RJ45 female ports on it, and you’ll need two, one on each end of the cable you’re splitting, making it all work.
That’s the most significant advantage you get when you buy this product because it comes as a two-pack and is, therefore, a great deal, working out to $6.50 per splitter. You need an 8-core Ethernet cable, which has eight wires inside. That means cables that are at least CAT5 or better.
The Wuedozue splitter is a curious device. While it looks like a passive splitter, where you’d usually need two splitters for it all to work, this only requires a single unit. It also requires USB power to work, which is a clue that this is not a splitter but a simple two-port unmanaged Ethernet network switch.
It is somewhat of a downside that you need to provide USB power (and there’s no USB power supply included). Still, you get fast Ethernet internet speeds; you only have to use one port on your router, and it’s not much more expensive than a pair of traditional splitters.
This is NOT an actual RJ45 splitter adapter. While it looks like the NOBVEQ splits one port into three, that’s not the case. While you can plug three devices into this adapter, only one of them can actually use the network at a time.
This doesn’t seem particularly useful, but if you have three devices where only one of them is on at any given time, this could be a great solution. It’s a niche take on Ethernet port replication, but we can see some computer labs or workstation setups benefiting from this cheap fix.
Avoid a Splitting Headache
It’s clear that buying a traditional splitter isn’t a great idea unless you’re trying to save every penny you can. Luckily there are many superior options than a splitter Ethernet adapter to choose from to spread your home network to all the corners of your living space that need it without destroying your connection speed.
