Questions tagged [rj45]
The rj45 tag has no usage guidance.
31 questions
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What AWG (cable thickness) do RJ45 jacks take for ethernet cable?
In the past I've used some thick Cat6 cable that wouldn't phyiscally fit in to an RJ45 connector. I'm about to buy a roll of Cat6 and I want to avoid the same problem, since the ones I'm looking at ...
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Can I connect a server with a 10G SFP+ port to a switch that only has 10G RJ45 ports?
All of our networking equipment is copper. I'm looking at buying a server but it just so happens to have a 10G SFP+ port and I'm unfamiliar with these. My understanding is that these are primarily ...
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Can I use 10Gb Copper SFP+ modules in a Dell PowerVault ME5 25Gb iSCSI controller card?
We are looking to upgrade our SAN from 1Gb copper to 10Gb, preferably with the option to use either copper or optical for flexibility on the switch side. I like the option of upgrading to 25G or 100G ...
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Is there any cheap way to convert from CX4 to RJ45? [closed]
I have an HP ProCurve 2900 with 2 x CX4 10Gb ports in the back.
And I want to somehow link it with my internet provider 10Gb hub, which only has a 10Gb RJ45 connector.
So far I was only able to find ...
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Gigabit RJ45 loopback not working (100 Mbps ok)
I made myself a loop back plug as per
When I plug it into a 1Gbps port on 100/1G switch the port does not light up.
100 Mbps port on 100 Mbps switch lights up no problem.
The obvious problem could ...
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LAN cable-tester's LEDs fire at 3 and 6 (without passive side attached)
I have hardware question.
I am running a duplex CAT7 cable from a patch panel to a wall socket. One connection works, the other struggles when I test the cable.
Below I describe how I tested the cable ...
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How does the RJ45 crimping tool work?
There are plenty of videos and descriptions about how to use an RJ45 crimping tool. I've seen a few, and I have even tested a crimping tool, but I still don't understand how it does what it does.
What ...
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Patch panel with J45 Cat6 female/female connectors very fragile connection
I have a patch panel with the following female/female CAT6 RJ45 snap-in connectors in my cabinet:
It basically serves as a pass-through for the cables at the front to the cables at the back and vice-...
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Wiring for a SFP rj45
I have a CISCO Catalyst 3560G and I bought two SFP to RJ45 Copper Module for Cisco GLC-T/SFP-GE-T Gigabit 1000Base-T Transceiver. I plugged one Module into the CISCO switch and the other into a ...
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I want extend CAT5 cable, more than 100m
I have a track like 130 meters. CAT5 cable limit is 100m. Is it possible to cut it in half and get a switch in the middle of the track? Will it work?
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Ethernet wiring of pairs for a 100mbit configuration
In Ethernet wiring, for a 100mbit configuration, if Pairs C & D are connected at one end instead of pairs A & B, would it function?
Computer: Eth A ==|
B ==|
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Powering a Patch Panel [closed]
So I'm in the process of replacing all the telephone wall plates with ethernet plates so I will have the choice to hardwire to the internet from any room if I so desire. right now I have my internet ...
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Do I really need a DB9-RJ45 adapter to connect to a Cisco router console, and if so, why?
I have an Enterprise grade Cisco router and an HP laptop. I would like to connect to the router on the console port to conduct out-of-band management.
The console port on the router uses an RJ45 ...
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N00b alert: Cat 6A keystones with Cat6/Cat5e wires and Cat6A wires with Cat6/Cat5e connectors [closed]
So first off, I have no idea how this ish works but I got myself deep down with it.
I was building my new house and in the garb of moment, when I was thinking of having Ethernet connectors all over ...
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Can I use Cat6 and Cat5e female jacks together?
Having one on each end, as long as I use the same color code for both?
for some reason it's not working, both jacks have different A and B codes, but I just used the same on both being:
Left column:
...
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Running CAT5e F/UTP together with power, without shielded plugs [closed]
I just ran about 20-30 meters of Solid CAT5e F/UTP cable from a switch to a shed where i have a server.
About the last 1/3 of the way, its running together with a mains extension cable, that provides ...
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is there a difference plug setup between cat 5 and cat 5e? [closed]
Is there a difference in either the RJ45 plug or the wiring into the plug (for 568B) between a Cat 5 and Cat 5e cable, used for connecting a router to a computer?
Here's a little background info. I'...
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Can Cat6A connector fit to normal gigabit network switch?
Cat 6A cable is thicker than Cat6 cable. For a Cat6 cable and connector, we can plug into any network switch that has RJ45 connector even a 100Mbps network switch.
Just wonder if I use Cat6A cable ...
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Find out physical network layout?
I'm dealing with some weird networking issues at a workstation in a large warehouse. There is a preexisting drop that is being used for a machine.
I found the other end of the wire by using a tone ...
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Color coding to connect rj45 socket and rj45 connector to make an ethernet extension cable [closed]
i want to make a cable like this:
What should be the color coding to make this Ethernet LAN Network extension Cable. I have a rj45 socket and a rj45 connector but there indicator on rj45 female ...
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Cisco console, is possible to have DB9 split out to multiple RJ45's?
Cisco Serial Console cables are simply DB9 to RJ45. Of course many people have now come to use a variety of DB9 to USB adapters to get around many machines not having serial ports. But I'm more ...
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What is the most proper way of wiring RJ45 for Cat6/LAN?
I currently know of three different wiring patterns for RJ45: T568A, T568B, and USOC.
Simply put: Which is the best method for creating a Cat6 cable?
From my research, it seems like I should use ...
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Which way up does an ethernet port go? [closed]
I've scoured the internet, but nobody seems to be able to decide whether RJ45 sockets should go with the release catch facing up or down.
For instance, Netgear has their ports this way:
But Cisco ...
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What will happen if a PoE powered patch cable is plugged into a normal RJ-45 plug?
I have a couple PoE powered keystone jacks sticking out of a wall in a computer lab. We're going to remove /block the excess ones eventually, but for now I'm worried about somebody plugging a laptop ...
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RJ45 female to male fault
i have the following - common - problem, on one end of the cable, there are RJ45 males T586 A which are connected to a 8-port switcher, on the other end, there supposed to be RJ45 females _T586 A ...
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Using Serial to RJ45 cable to connect to a 3Com switch
I have always use a serial to serial port or serial to usb to connect to switches. Normaly they came with RJ45 to usb cable in cases when I had a RJ45 cable to serial. But now I have 3Com switch ...
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How to convert RJ45 wiring to RJ25
I have a RJ45 cable wiring. I need to use it to connect my printer to network. But the network socket that was available in my printer is RJ25 socket.
I thought that i can wired cross cable which is ...
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TIA 568A vs. B Wiring for Long Ethernet Run
I have a long Ethernet run (about 280 ft/85 m) that goes through a conduit between two buildings. On each end, I have an APC Ethernet surge protector that is grounded to the main ground for each ...
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Robust RJ45 for frequent connections/disconnections [closed]
I am looking for robust RJ45 cables/connectors in an environment where people come and go and plug in and out. After a month of usage, the connectors are worn out and fall out and you need to replace ...
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Converting an Ethernet Coupler to a Crossover Adapter
I want to add a crossover to my network toolbox. Aside from an actual an actual crossover cable, I like the idea of an adapter (figure 1). There are crossover adapters available online, but I’m ...
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Why would CAT6 connectors not work with CAT5e cable?
I had a poor batch of Cat5 connectors (the latching mechanism didn't work) so I decided to order some Cat6 connectors in preparation for the inevitable upgrade.
My existing reel for making patch ...
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