Questions tagged [rj-45]

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1answer
46 views

Conecting a controller's RJ45 port to laptop's USB port

I have a CNC controller that uses RJ45 socket as a input for reciving instructions from my laptop. I use a USB to RS232 adapter and then RS232 to RJ45 adapter to finally connect my controller using a ...
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1answer
33 views

How to interpret this rj45 tester double blink

I have some cheap rj45 tester and wanted to test my newly installed rj45 cord. And because the most of cord is underfloor (there is some risk this was damages during renovation) I wanted to make sure ...
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1answer
33 views

A virtual network interface to another machine's network interface, possible?

I have the latest macbook pro and a windows laptop both connected to the same wifi. Then I need to connect an external device which uses RJ45 network cable. The macos is the main computer but it does ...
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2answers
60 views

Can I pass an RJ45 WAN router port through the RG11 telephone port

a friend of mine just moved into a new 2 story house. She used to use PLC for her internet connection in her old one story house. Now, she obviously gets a lot lower speeds, not only over ethernet but ...
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4answers
70 views

How to repair a flat RJ45 cable and connector?

My son installed a flat RJ45 cable with moulded connectors between two rooms in our house. However, the connector and cable at one end got torn off. Pulling a new cable is sadly not an option, so - ...
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1answer
633 views

Ethernet cable tester only blinks on 4 and 5, incorrect order

I have two Ethernet ports wired together (A -> B). I used a cable tester to check whether they have been wired correctly, and I have the following findings: Transmitter is on A, only flashes 4, 5. ...
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0answers
37 views

Ethernet cable CAT 7 installation

I'm installing an ethernet network on my house. One of the cable goes under the floor so this installation is meant to stay like this for a while. So I try to buy the most recent hardware for future ...
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0answers
57 views

Lan cable passes cable tester but doesnt work (partially)

So I bought brand cat 7 roll from amazon with good reviews (dont need cat7 in this particular case just want to connect a 2 meter cable @ 100mbps) How I connected the ends 1st pin orange stripes 2nd ...
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1answer
189 views

How do I open this RJ45 wall jack?

Hi I am try to see if the cables in this RJ45 wall jack are put in correctly but I can’t seem to figure out how to open it. Does any know if this can be opened or does it have to be broken?
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1answer
73 views

Cat6 cabling faulty? Any way I can salvage this?

I got cat6 cables set-up with my house when it was built. Everything seems to be working fine, until last week when I tried for the first time one of the last RJ45 wall sockets I was yet to use. I ...
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1answer
146 views

Can I use a USB 2.0 female to RJ45 cable to print docs sent to my router connected printer?

Can I use a USB 2.0 female to RJ45 cable to print docs sent to my router connected printer (USB only). A device like this one? Why do people use a print server if it can work like this?
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1answer
113 views

Homemade Cat6 ethernet not working when PoE is in use

I've just crimped together a couple of CAT6 Ethernet cables. The cables are about 20 meters long each. They are shielded and so are the connectors. They run along each other from one room to the ...
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1answer
84 views

Does the "category" of RJ45 female connector affect possible speeds/quality?

Simply enough - if you connect an RJ45 connected marketed as "CAT5e", to a CAT6a cable & network, will it affect speeds or quality? is it just marketing? Or is there an actual difference ...
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1answer
230 views

How to convert an Ethernet interface (via USB) to a simple RJ45

I have a device that outputs a USB cable that, when plugged into a computer, creates it’s own network interface. My question is, how can I convert that USB cable to a RJ45 Ethernet cable, so that I ...
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1answer
299 views

Home Networking Rj45 from switch to faceplate

I'm currently running network cable from a central switch to different areas of the house. One room has an RJ45 faceplate, every other cable is running between locations connected to rj45 connectors. ...
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2answers
3k views

Internet access: dsl cable to ethernet in the router

Can I access to internet by using not the RJ11 to RJ11 cable, but a cable RJ11 to RJ45, namely a cable with a dsl tip and an ethernet tip like this? I didn't find a solution of this type on the web; I ...
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0answers
139 views

Ethernet Connection Drops from Router - Un/Replugging Cable Fixes

I recently added an ethernet line that runs though some walls to link a microserver and some RPis in one room with the main router in another room. I have a problem where after some (seemingly random) ...
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1answer
40 views

CAT5E Troubleshooting

I ran CAT5E through the walls in my house today. Everything looks fine but when I crimp the ends and attach them to my Rogers modem the cables are not working. I thought I was crimping it wrong but ...
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2answers
213 views

RJ45 sleeve slips off after crimping

I've had to crimp a few cables with an RJ45 connector to get my house wired up. I noticed on some old ones that I had crimped, the plastic sleeve has slipped out of the connector. The cable still ...
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6answers
4k views

Is it possible to connect an old RJ11 phone line into a Cat 6 wall socket to use for FTTN service?

I just moved into an older house and the NBN guy told me the phone socket's been cut off and plastered over. I checked with the previous owner and he said that the cord is just cut off, sitting under ...
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3answers
256 views

Can a screw terminal jack handle high speed (> 100 Mbps) Ethernet?

The builder ran Cat-6 cable through the walls, and then installed these screw-on RJ-45 Ethernet jacks: To my eye, because the twisted pairs are untwisted for an inch or two, it's highly unlikely ...
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1answer
41 views

Home Networking Cable and equipment choice [closed]

I wanted to rewire parts of my home, and got across the Cat Standards. However, when trying to shop for Cat6a, I almost always only come across Cat7 cables. Why is that the case ? Where can I get good ...
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0answers
61 views

RJ45 not working on my Toshiba Qosmio X500 Notebook

When I plug the RJ45 cable into the machine, running Windows 10, I get the message Unidentified network - No internet I do have a Wi-Fi connection to the router, so I am on the internet, but the ...
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2answers
719 views

RJ45 Crimping - Do I have bad plugs?

I have a basic crimping tool that so far worked most of the times. I am a hobbyist when it comes to computers and networking. Recently I bought a few new plugs and now crimping simply does not work. ...
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0answers
417 views

USB-C to HDMI cable length restrictions

I'm curious how USB-C to HDMI cables lengths restrictions work? I know USB-C has a reliability restriction of 13ft and HDMI can run up to 50ft. However, if you have a USB-C to HDMI passive cable, what ...
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1answer
1k views

Home network cabling (F/FTP, U/UTP, U/FTP)

I am doing some re-wiring at home and I am buying new patch cables. Here they are: http://www.justslim.eu/index.php/slimlight/slimlightutp You can get these in either U/UTP, U/FTP or F/FTP and I ...
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1answer
31 views

Home Cat5 questions

The house I'm working on has pre wires cat5 going through it, but they didnt terminate any wall plates. They all centrally meet in the basement. The demarc unfortunately comes in upstairs. The modem, ...
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3answers
614 views

Can i use RJ45 ethernet splitter as second contection to my pc?

I have a router and laptop but when my parents turn off router I will not receive the internet, so I decided to use RJ45 as the second connection. You can see how I imagined it in the picture. So, I ...
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1answer
47 views

RJ45 between wall sockets

I have installed a 70 meter long RJ45 CAT6 cable between my house and my garage. The setup I'm trying to achieve is very simple: Router <--> eth cat6 (industry crimped) <--> wall socket <-->...
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2answers
5k views

Should the pins on both sides of an RJ11 cable be in the same order?

Is RJ11 pin order like RJ45 where the order is always the same (e.g. Brown is always on the left, when looking from the bottom), or should they be mirrored - one side with red on the green's right, ...
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2answers
12k views

Convert RJ11 to RJ45

I have random RJ11 wires in house which have been cut off as they were used for the master socket and the master socket was in an awkward place. And I was wondering if it was possible to convert both ...
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1answer
1k views

Determine cause of low bandwidth on solid Ethernet cable with stranded connectors

I installed stranded RJ-45 modular plugs on solid Cat5e cable. My cable tester shows all cables are OK, but all except one won't go beyond 100 Mbps (I have a 300/300 connection). How can I determine ...
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3answers
6k views

RJ45 -SFP Connection?

I originally thought that SFP connection involved optical fiber. However, I came across an RJ45-SFP Copper device. Thus, it appears to be an SFP device that connects to an RJ45 slot and conducts ...
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2answers
80 views

I am confuse to use fiber optic cable, Rj45 or current cat6 cable?

We want to do networking again, server room is on first floor connected to 25M cat6 UTP cable with ground floor DLink router modem(DSL-2750U).(I can not change this cable as it done during ...
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1answer
455 views

10pin RJ-45-to-USB, need to make console cable (Linux router)

To preface this question: I'm not able to get to a parts store any time soon. I'm well aware that I could buy what I need, but I'm trying to make do with the tools and hardware I already have. I ...
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1answer
87 views

Cat6a RJ45 connector does not connect

I have Cat6a S/FTP Shielded cable, TP-Link TL-SG1024 (24 port) switch, deleyCON Cat6a wall sockets (with 2 RJ45 ports) and a Cat6a deleyCON (24 port) switch panel. I bought Cat6a RJ45 connector (FTP ...
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2answers
6k views

Why does RJ-45 use pins 1, 2, 3 and 6 instead of 1, 2, 3 and 4 to send and receive data? [duplicate]

Why does TIA/EIA 568A and TIA/EIA 568B use pins 1, 2, 3 and 6 to send and receive, instead of 1, 2, 3 and 4? Is there a significant reason for this?
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1answer
38 views

Why would someone cut off 4, 5 and 7 on a 568A Ethernet termination?

I recently ran into a network that was having some very peculiar problems. I ended up having to re-terminate the connections, which seems to have resolved the intermittent problem, but what I found ...
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5answers
17k views

Home ethernet - daisy chained

I recently bought a house with RJ-45 and RJ-11 on one wall plate, and coax for TV on the other plate in a single box in each bedroom. I opened one up, and it looks like they did not run individual Cat ...
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2answers
1k views

Can I use my ethernet port on my pc as a phone line?

I have an ethernet port used for Internet, but since I bought a wireless adapter that port is no longer needed. So I thought instead can I use that port as a phone line and just plug a phone line ...
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1answer
2k views

home network wall socket ethernet not connected

I have a fibre connection with a modem and one RJ45 going into the wall socket. in the common area, I have the incoming RJ45 from the fibre and additional 4 rooms cables meeting at the same spot. I ...
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0answers
957 views

Carry phone and internet signal over powerline

I want to connect my phone with RJ11 and STB (IPTV) with RJ45 in another room, while extending the wifi signal. Regarding the phone, is it possible to do the following: Router with RJ11 -> Adapter ...
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2answers
1k views

connecting a receiver to computer using ethernet cable

I learned at class that when we connect two computers with rj45 cable (I think it works for both straight and crossover cable) we can access to one of them , command line precisely, using it's IP ...
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0answers
43 views

Internet browsing freezes on other LAN PCs when my computer NIC cable is plugged in

The last two months in pain, confusion and searching, first of all I need to tell you that I really cannot wording my question, even before posted it here I couldn't asks for a friend's help because I ...
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2answers
517 views

10Base-2 connection to new pc

So I have a very old pc running windows xp, and I am currently using a pci network card with a 10Base-2 Internet interface, which I am using for Internet connection on the pc. The 10Base-2 cable goes ...
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2answers
2k views

How to connect an RJ45 cable into a RJ9 socket?

Is there a way to use a UK phone with an RJ45 cable on a telephone system with an RJ9 socket? I bought a phone in the UK not knowing that the network back home required a different cable/plug. So, now ...
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3answers
152 views

How to wire cut ethernet cable that is weirdly-wired at ends?

My mum cut ethernet cable (cat 5 or 5e) that connects my switch with main router. We plan on crimping the cut sides and coupling them. I'm just not sure what the right wiring for that is, as the ...
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2answers
852 views

VGA to ethernet

SSH is a protocol used to communicate with headless systems but when there is pxe and bios problems it becomes too difficult to handle specially if we don't use serial console , kvm and other ...
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2answers
921 views

how to connect 2 computers using console cable

I know this is a weird question, however, I have a console (rollover) cable - the one used to connect to network devices' console port (e.g. cisco switches). I'd like to know if it's possible to use ...
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1answer
1k views

Properly insert ethernet cable into RJ-45 wall port?

This has always puzzled me and made me wonder if there is a better way of accomplishing such a simple task. Many might have come across one variant of an Ethernet wall port with a plastic cover over ...