Using an Ethernet Splitter for 2 computers

JMedlock83

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So, is it possible to use an Ethernet Splitter, such as this one to connect 2 desktop computers to the modem itself? My router is having problems and I'm having to ship it to Netgear.
 

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vannn

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wouldnt that cause interference?

we have that kind of splitter but one line dedicated for phone and the other for dsl line and they;re not interchangeable since it would cause interference...
 

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JMedlock83

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wouldnt that cause interference?

we have that kind of splitter but one line dedicated for phone and the other for dsl line.
Now that I think about it, i don't think it will work, because both computers can't have the same IP Address, unless there's a way to give each computer its own static IP until I get my router back.
 

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    AMD Radeon R290
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johnlgalt

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So, is it possible to use an Ethernet Splitter, such as this one to connect 2 desktop computers to the modem itself? My router is having problems and I'm having to ship it to Netgear.

First off, let me say I'm not an expert, by any means, but I know enough to do this stuff myself. That being said, my answer is:

It depends. Data is carried on wires 1,2,3 & 6, leaving 4,5 and 7,8 free for use. However, if your network makes use of PoE, or Power over Ethernet, then 4,5 and 7,8 are going to be used somewhere in your system, and you need to know this ahead of time.

Otherwise, this type of thing was done before, and can probably be done if the device that the single side plugs into has MDI capabilities, and also will allow more than one connection on a single port.

A better answer, though, is to ask: What, exactly, are you trying to do, and why? (Honestly, the what is more important than the why, but sometimes the why can give good insight).

wouldnt that cause interference?

we have that kind of splitter but one line dedicated for phone and the other for dsl line.

Somewhat - but if the end that is single plugs directly into a device, using, say, a very short (1 ft) patch cable, then the cross talk will be small enough to not really matter. But if that one wire is run for a long distance, then there is probably going to be crosstalk along the entire length of the wire, which can cause some problems.

But, again, we first need to know more. How it will be used, why, etc.

Again, let me close this out by saying I am not an expert in these matters by any means, but I do know enough to have a (basic) cert or two, and just trying to help.
 

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JMedlock83

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First off, let me say I'm not an expert, by any means, but I know enough to do this stuff myself. That being said, my answer is:

It depends. Data is carried on wires 1,2,3 & 6, leaving 4,5 and 7,8 free for use. However, if your network makes use of PoE, or Power over Ethernet, then 4,5 and 7,8 are going to be used somewhere in your system, and you need to know this ahead of time.

Otherwise, this type of thing was done before, and can probably be done if the device that the single side plugs into has MDI capabilities, and also will allow more than one connection on a single port.

A better answer, though, is to ask: What, exactly, are you trying to do, and why? (Honestly, the what is more important than the why, but sometimes the why can give good insight).



Somewhat - but if the end that is single plugs directly into a device, using, say, a very short (1 ft) patch cable, then the cross talk will be small enough to not really matter. But if that one wire is run for a long distance, then there is probably going to be crosstalk along the entire length of the wire, which can cause some problems.

But, again, we first need to know more. How it will be used, why, etc.

Again, let me close this out by saying I am not an expert in these matters by any means, but I do know enough to have a (basic) cert or two, and just trying to help.
Like i said, i'm having to send my brand new netgear router, that I got in March, to Netgear. It's faulty and still under warranty. I have 2 computers. One i use daily, and the other I use for tracking weather, and streaming.
 

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    Windows 10 Pro x64
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    AMD FX 8350
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    Asus Crosshair V Formula Z
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    16GB
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    AMD Radeon R290
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bobkn

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A bit out of my depth, but I'm pretty sure you'd need a switch.

Wired (only) ones can be inexpensive. My local BestBuy claims to have a 5 port Linksys switch in stock for $30.
 

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    32GB Gskill DDR4 2800
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    homebuilt
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    Ryzen 9 3900X
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    MSI MPG X570 Gaming Plus
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A Guy

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You can split with that, but internet would only work on one PC at a time. If you tried to use internet on both at the same time it would crash your internet

A Guy
 

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CB

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If both PC within a close range you can make a temporary hotspot, one PC directly to the line and use a USB wi-fi receiver as a transmitter. It might only have a final power of 1 watt or less but it does good within close range, approx. 3 meters or less.

That is what I use to do.

Edit.
I use virtual router manager. It's downloadable somewhere with .msi extension.
You need two cheap USB wi-fi receiver.
The first PC acts as router.
Need to set the ethernet property as shareable.
 
Last edited:

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Mystere

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Just go to best buy, buy a router to use while yours is being repaired, and then return it after yours comes back.
 

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JMedlock83

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Just go to best buy, buy a router to use while yours is being repaired, and then return it after yours comes back.
Easier said than done.
 

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    Asus Crosshair VI Hero
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    16GB
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    AMD Radeon R290
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    AMD FX 8350
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    Asus Crosshair V Formula Z
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    16GB
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    AMD Radeon R290
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    AOC 27"
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    1920X1080
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    250GB Intel SSD
    500GB Seagate
    PSU
    Cougar CMX 1000w
    Cooling
    Air Cooling
    Mouse
    MX Master
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    Microsoft Ergonomic 4000
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jimbo45

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So, is it possible to use an Ethernet Splitter, such as this one to connect 2 desktop computers to the modem itself? My router is having problems and I'm having to ship it to Netgear.
Hi there

@JMedlock83

Why not use a cheap 5 port Switch -- just connect the lan cables from each computer to the switch and then a single cable from switch to the router (or even a wireless extender).

I use a cheap netgear one and it works for me up to 10 Gbs -- fine for 1 Gbs Internet -- I connect 4 machines to my switch.

(If your computers only have wifi then just use USB->Lan connectors - those things are cheap as well)

Here's one from Amazon UK -- in US probably cheaper as UK prices include mind blowing wallet busting 20% V.A.T (sales tax).

ng.png

When you set it up you can also increase throughput considerably by setting the Network adapters in the computers to FULL DUPLEX

For HOME use unmanaged switch as shown is 100% acceptable. Also useful to give older slower wifi computers having no LAN connectors faster Internet and LAN access - use USB->Lan adapter to connect LAN to switch


Cheers
jimbo
 

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johnlgalt

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You can split with that, but internet would only work on one PC at a time. If you tried to use internet on both at the same time it would crash your internet

A Guy

^^^^^^ This, until you get your router back / get a replacement.

For future use, though, not a bad idea to get a switch when you can.
 

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    Dell Latitude E5470
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    Intel(R) HD Graphics 520 + RealTek Audio
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    Dell laptop display 15"
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    1920 * 1080
    Hard Drives
    Toshiba 128GB M.2 22300 drive
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    Dell
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clam1952

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Same here, I use a 5 port switch, TP LInk in a metal case, fractionally more expensive than the Netgear one. 4 PC's to switch, switch to router which is around 5m away using cat 6.
I've got one of those USB to Ethernet dongles on my oldest PC, works very well.
 

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    Windows 11 21H2 OS Build 22000.282
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    AMD Ryzen 7 3800X
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    Asus PRIME B350-PLUS
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    16GB Corsair Vengeance LPX DDR4 @3000Mhz
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    On Board Realtec
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    Acer KA241
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    1920 x 1080 @60Hz
    Hard Drives
    240GB PNY CS900 SSD - OS
    1 TB Crucial MX500 SSD
    500GB Crucial MX300 SSD
    2TB Seagate ST2000DM001-1ER164
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    4TB Seagate ST4000DM000-1F2168
    PSU
    EVGA 750GQ Gold Certified
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    Cooler Master 690 III
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    Akasa AK98 5 Case Fans
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    Logitech K270 - wireless
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    Logitech - wireless
    Internet Speed
    BT Fibre 75 Mbps
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    Windows Defender
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    Use hardware KVM to switch monitors on three PCs and software (input director) to use mouse and keyboard on all 4 PCs.
  • Operating System
    Windows 11 Pro 21H2 build 22000.282
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    PC/Desktop
    Manufacturer/Model
    Dell Inspiron 3881 - modified with SFX PSU fitted internally
    CPU
    Intel i5 - 10400
    Motherboard
    Dell 032w55 version A00
    Memory
    16GB of HyperX Fury @ 2133 Mhz
    Graphics card(s)
    EVGA 6GB GTX 1060.
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    Builtin
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    ACER KA241
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    1920x 1080 @60Hz
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    Modular 450 Watt Corsair SF450 Platinum ( Mod to replace the Dell 65 Watt PSU)
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    BT Fibre 75 Mbps
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    Use hardware KVM to switch monitors on three PCs and software (input director) to use mouse and keyboard on all 4 PCs.

badrobot

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And I thought all gateways these days have built-in wireless routers...

I have a Netgear and Linksys gigabit router that I am not using, if only you live somewhere near, I'll give one to you.
 

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    Windows 10/11 Pro
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    i7-4790K
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    ASRock Xtreme6 Z97
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    16GB Corsair Vengeance Pro
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    MSI R9 290
    Monitor(s) Displays
    LG Ultrawide 34"
    Screen Resolution
    3440x1440
    Hard Drives
    Samsung M.2
    PSU
    Thermaltake 475 Watts 80 Bronze
    Case
    Thermaltake Commander I Snow Edition
    Cooling
    Deep Cool Archer Air Cooler
    Internet Speed
    1Gbps
    Browser
    Chrome
    Antivirus
    "Moderna"
  • Operating System
    Windows 10 Pro
    Computer type
    PC/Desktop
    CPU
    AMD Ryzen 9 3900X
    Motherboard
    MSI MPG Gaming Edge Wifi (X570)
    Memory
    32GB Adata XPG DDR4
    Graphics card(s)
    ASUS GTX 1070 8GB ROG Strix
    Monitor(s) Displays
    LG Ultrawide 34"
    Screen Resolution
    3440x1440
    Hard Drives
    Main Boot Drive : 512GB Adata XPG RGB Gen3x4 NVMe M.2 SSD
    PSU
    EVGA 600 Watts Gold
    Case
    Deepcool Genome II
    Cooling
    Deepcool Fryzen
    Mouse
    Logitech G402
    Keyboard
    Armageddon MKA-5R RGB-Hornet
    Internet Speed
    1Gbps
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    Chrome
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    Moderna :)

iko22

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clam1952

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And I thought all gateways these days have built-in wireless routers...
Ahh, but not all PCs have Wireless though, only one of my current four PCs and an old Linux laptop have wireless and some of us don't use it or need it other than in my case just occasionally for an LTE Samsung tablet if the 4G connection is down or as I did yesterday to update the OS on my rarely used iPad. I turn it off in the Router if not using it.
 

My Computers

System One System Two

  • Operating System
    Windows 11 21H2 OS Build 22000.282
    Computer type
    PC/Desktop
    Manufacturer/Model
    Self Build
    CPU
    AMD Ryzen 7 3800X
    Motherboard
    Asus PRIME B350-PLUS
    Memory
    16GB Corsair Vengeance LPX DDR4 @3000Mhz
    Graphics Card(s)
    Gigabyte Aorus GTX1080TI
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    On Board Realtec
    Monitor(s) Displays
    Acer KA241
    Screen Resolution
    1920 x 1080 @60Hz
    Hard Drives
    240GB PNY CS900 SSD - OS
    1 TB Crucial MX500 SSD
    500GB Crucial MX300 SSD
    2TB Seagate ST2000DM001-1ER164
    2TB Seagate ST2000DM008-2FR102
    4TB Seagate ST4000DM000-1F2168
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    EVGA 750GQ Gold Certified
    Case
    Cooler Master 690 III
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    Akasa AK98 5 Case Fans
    Keyboard
    Logitech K270 - wireless
    Mouse
    Logitech - wireless
    Internet Speed
    BT Fibre 75 Mbps
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    Firefox
    Antivirus
    Windows Defender
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    Use hardware KVM to switch monitors on three PCs and software (input director) to use mouse and keyboard on all 4 PCs.
  • Operating System
    Windows 11 Pro 21H2 build 22000.282
    Computer type
    PC/Desktop
    Manufacturer/Model
    Dell Inspiron 3881 - modified with SFX PSU fitted internally
    CPU
    Intel i5 - 10400
    Motherboard
    Dell 032w55 version A00
    Memory
    16GB of HyperX Fury @ 2133 Mhz
    Graphics card(s)
    EVGA 6GB GTX 1060.
    Sound Card
    Builtin
    Monitor(s) Displays
    ACER KA241
    Screen Resolution
    1920x 1080 @60Hz
    Hard Drives
    256GB SK hynix NVMe
    1TB Western Digital WD10EZEX-75WN4A1
    PSU
    Modular 450 Watt Corsair SF450 Platinum ( Mod to replace the Dell 65 Watt PSU)
    Case
    Inspiron Small Desktop
    Cooling
    Dell stock cooler
    Mouse
    Dell
    Keyboard
    Dell
    Internet Speed
    BT Fibre 75 Mbps
    Browser
    Firefox
    Antivirus
    Windows Defender
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    Use hardware KVM to switch monitors on three PCs and software (input director) to use mouse and keyboard on all 4 PCs.

badrobot

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Ahh, but not all PCs have Wireless though, only one of my current four PCs and an old Linux laptop have wireless and some of us don't use it or need it other than in my case just occasionally for an LTE Samsung tablet if the 4G connection is down or as I did yesterday to update the OS on my rarely used iPad. I turn it off in the Router if not using it.
Exactly. The OP is having problem with his router not the PC with or without wireless. I just thought that routers normally comes built into the gateway (modem).
 

My Computers

System One System Two

  • Operating System
    Windows 10/11 Pro
    Computer type
    PC/Desktop
    CPU
    i7-4790K
    Motherboard
    ASRock Xtreme6 Z97
    Memory
    16GB Corsair Vengeance Pro
    Graphics Card(s)
    MSI R9 290
    Monitor(s) Displays
    LG Ultrawide 34"
    Screen Resolution
    3440x1440
    Hard Drives
    Samsung M.2
    PSU
    Thermaltake 475 Watts 80 Bronze
    Case
    Thermaltake Commander I Snow Edition
    Cooling
    Deep Cool Archer Air Cooler
    Internet Speed
    1Gbps
    Browser
    Chrome
    Antivirus
    "Moderna"
  • Operating System
    Windows 10 Pro
    Computer type
    PC/Desktop
    CPU
    AMD Ryzen 9 3900X
    Motherboard
    MSI MPG Gaming Edge Wifi (X570)
    Memory
    32GB Adata XPG DDR4
    Graphics card(s)
    ASUS GTX 1070 8GB ROG Strix
    Monitor(s) Displays
    LG Ultrawide 34"
    Screen Resolution
    3440x1440
    Hard Drives
    Main Boot Drive : 512GB Adata XPG RGB Gen3x4 NVMe M.2 SSD
    PSU
    EVGA 600 Watts Gold
    Case
    Deepcool Genome II
    Cooling
    Deepcool Fryzen
    Mouse
    Logitech G402
    Keyboard
    Armageddon MKA-5R RGB-Hornet
    Internet Speed
    1Gbps
    Browser
    Chrome
    Antivirus
    Moderna :)

barman58

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They can be all in one, but the issue is that like any other AIO devices if one part fails its a total failure of both parts

The other major limiting factor is that, in the UK at least, the modem is usually supplied by the Telecoms Company and the router by the ISP
 

My Computers

System One System Two

  • Operating System
    Windows 10 Pro x64 [Latest Release Preview]
    Computer type
    PC/Desktop
    Manufacturer/Model
    Chillblast to my design
    CPU
    Ryzen 9 5950X, 4.9GHz
    Motherboard
    Asus Prime X570-Pro Motherboard
    Memory
    64GB DDR4 3200MHz
    Graphics Card(s)
    4GB NVIDIA GEFORCE GTX 1650 Ti - HDMI, DP
    Sound Card
    On motherboard Feeding SPDiF 5.1 system
    Monitor(s) Displays
    32" UHD 32 Bit HDR Monitor + 43" UHD 4K 32Bit HDR TV
    Screen Resolution
    2 x 3840 x 2160
    Hard Drives
    1TB M2 SSD OS, 500GB Fast Access SSD, 2 x 8TB Data + Various Externals from 1TB to 4TB, 10TB NAS
    PSU
    NZXT C750 80 PLUS Gold 750W Modular PSU
    Case
    Chillblast Silent Workstation PC Case - Black
    Cooling
    NZXT Kraken X63 280mm CPU Cooler, Quiet Case fans Fan
    Keyboard
    Wireless Logitec MX Keys + K830 [Depending on where I'm Sat]
    Mouse
    Wireless Logitec - MX Master 3 + M570 Trackball
    Internet Speed
    72 MB Down 18.5 MB Up
    Browser
    Latest Chrome
    Antivirus
    BitDefender Total Security 2021
    Other Info
    Also run...
    Laptop - Quad 8GB - Windows 10 Pro x64 HP 15.2"
    Nexus 7 Android tablet
    Samsung 10.2" tablet
    Sony Z3 Android Smartphone
    Samsung S9 Plus Smartphone
    Samsung Note S20
    Wacom Pro Medium Pen Pad
    Wacom Pro Small Pen Pad
    Wacom ExpressKey Remote
    Loopdeck+ Graphics Controller
    Shuttle Pro v2 Control Pad
  • Operating System
    Windows 10 Pro x64 [Latest release]
    Computer type
    Laptop
    Manufacturer/Model
    Dell XPS 17 9700
    CPU
    i7 10750H
    Motherboard
    Stock
    Memory
    32 GB
    Graphics card(s)
    Stock Intel + GTX 1650 Ti
    Sound Card
    Stock 4 speaker
    Monitor(s) Displays
    Stock 17"
    Screen Resolution
    3840 x 2160 HDR touchscreen
    Hard Drives
    2TB M2
    PSU
    Stock
    Case
    Stock Aluminium / Carbon Fibre
    Cooling
    Stock + 2 fan cooling pad
    Mouse
    Stock Trackpad
    Keyboard
    Stock Illuminated
    Internet Speed
    72 MB Down 18.5 MB Up
    Browser
    Latest Chrome
    Antivirus
    BitDefender Total Security 2021

jbcarreon123

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My Computer

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  • Operating System
    Windows 10, Windows 10 Ghost Spectre, Windows 11 (multi-boot)
    Computer type
    PC/Desktop
    Manufacturer/Model
    Dell Vostro 270s
    CPU
    Core i3 2100 3.2Ghz
    Memory
    4gb DDR3-1333
    Graphics Card(s)
    iGPU
    Sound Card
    Realtek
    Monitor(s) Displays
    HP Compaq LA2006x
    Screen Resolution
    900p
    Internet Speed
    10MBit/s
    Browser
    Chrome, FFox and my homemade browser IE11-based
    Antivirus
    WD
    Other Info
    Second-hand PC,
    No TPM, having WDDM 1.2, unsupported CPU.
    Installed Windows 11 using the registry hack..
    Clean installed even Windows 10

blacxarea

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Hi there

@JMedlock83

Why not use a cheap 5 port Switch -- just connect the lan cables from each computer to the switch and then a single cable from switch to the router (or even a wireless extender).

I use a cheap netgear one and it works for me up to 10 Gbs -- fine for 1 Gbs Internet -- I connect 4 machines to my switch.

(If your computers only have wifi then just use USB->Lan connectors - those things are cheap as well)

Here's one from Amazon UK -- in US probably cheaper as UK prices include mind blowing wallet busting 20% V.A.T (sales tax).

View attachment 4333

When you set it up you can also increase throughput considerably by setting the Network adapters in the computers to FULL DUPLEX

For HOME use unmanaged switch as shown is 100% acceptable. Also useful to give older slower wifi computers having no LAN connectors faster Internet and LAN access - use USB->Lan adapter to connect LAN to switch


Cheers
jimbo
I use this kind of thing to split connection for 4 PC's. Each could have different IP. I also use it for my TV.
 

My Computer

System One

  • Operating System
    Windows 11
    Computer type
    PC/Desktop
    Manufacturer/Model
    Unbranded
    CPU
    AMD Phenom(tm) II X2 555 Processor 3.20 GHz
    Motherboard
    Asus M4A785T-M
    Memory
    Kingston 16GB DDR3
    Graphics Card(s)
    NVidia GeForce GTX 650
    Sound Card
    VIA HD Audio
    Monitor(s) Displays
    2x LG 20" Display
    Screen Resolution
    1600 x 900 60MHz
    Hard Drives
    WD Blue 1TB HDD
    ADATA 500GB SSD
    Midas Force 500GB SSD
    PSU
    Enermax 500W
    Case
    Unbranded
    Cooling
    Unbranded
    Keyboard
    Logitech Wired K120
    Mouse
    Logitech Wired B100
    Internet Speed
    20MB Download 1,5MB Upload
    Browser
    Firefox
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    McAffee, Malwarebytes, Windows Defender
    Other Info
    Are you sneaking?
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