Questions tagged [cable]

The questions tagged that way are for the physical aspect of the cable, like length limitation, physical properties, tubing, installation, etc..

Networking cables are networking hardware used to connect one network device to other network devices or to connect two or more computers to share printers, scanners etc. Different types of network cables, such as coaxial cable, optical fiber cable, and twisted pair cables, are used depending on the network's physical layer, topology, and size. The devices can be separated by a few meters (e.g. via Ethernet) or nearly unlimited distances (e.g. via the interconnections of the Internet).

There are several technologies used for network connections. Patch cables are used for short distances in offices and wiring closets. Electrical connections using twisted pair or coaxial cable are used within a building. Optical fiber cable is used for long distances or for applications requiring high bandwidth or electrical isolation. Many installations use structured cabling practices to improve reliability and maintainability. In some home and industrial applications power lines are used as network cabling.

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Where to plug in the power switch on a HP proliant ml330 g6 systemboard?

The cable of the Powerswitch in the case needs 2 Pins, but there are 20 Pins at the front panel connector of the Mainbaord. Where I have to plug in this Cable?
Stuhlbaum
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Is there a meaning of why does the wire in a Cat6 or Cat5e cable colored differently?

like for example: does the green wire mean something in a Cat6/Cat5e cable?
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How to correctly connect SFF8643?

I plan to buy Adaptec RAID controller in my workstation. I have 8i ports with 2xSFF8643. So I need to use 2 cables SFF8643 => 4xSATA (shown on image). But I can see on image 1 additional connector (latest on the right). What is it? How should be…
Maxim
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Dell T7500 PERC Raid

I am looking to buy a Raid card as I can not use the motherboard Raid to achieve Raid 5 or 10 with my 4 SAS drives. I am a bit confused on how I would connect the drives to card. Do I need to connect the drives to the card via SAS cables, or will…
Eric Johnson
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Dell cable M246M vs generic mini sas cable

Is there any difference beyond brand between a Dell M246M cable and a generic mini sas-8087 cable? Is it just branding, quality control? Or is there some difference in the actual cables or connectors? Eg this dell M246M cable is the cheapest I could…
sysjas
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Ethernet cable only works in laptop, not switch

I have installed a new ethernet cable and for some reason it works just fine when connecting a laptop to it, but when plugging it into the switch at that end, no connection is established. Tried with multiple switches and multiple laptops, but each…
Mathias Nielsen
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Odd Network Cable Color Coding Sequence

I just got hired into a new company where no IT has been before. My first task was to identify the possible problems. This is what I first saw, when checking on the cables connected to the switch, I noticed a different color coding in this…
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Mini-SAS Connector Issue

allow me to apologize in advance, because I am horribly uneducated in this realm, yet I find myself with this problem: My company hired ProMax to setup all of our networking in our office. One of the things they set up was a 24TB Stardom RAID…
David
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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 T568B, however I am not aware of any advantages for…
Kaz Wolfe
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PVC raceway/conduit for CAT5e/CAT6/CAT6A cable

This is probably a bunch of stupid questions . The scenario is of running a few (5-6) CAT cables (version undecided, depending on costs). The scenario would be something like this :- a 3G USB modem - 3G router having single LAN port - 16-port…
shirish
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What's a 25 core network cable

While looking for different types of network cable, I came across this term called 25-core cable. You can get numerous examples putting the term '25-core cable' in any search-engine. But till date haven't found a single document which explains what…
shirish
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Can I use a 10G optical cable for 1G communications?

On Amazon, I see MMF optical cables advertised for 10Gbe. (See example here.) I'm looking for a 50u MMF optical cable for 1Gbe. Will the 10Gbe cables also work for 1Gbe? (The cable would be used with the Arista 1000BASE-SX transceiver listed here.)
Randomblue
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NVIDIA Tesla K20C in Dell PowerEdge R720xd --- power cables

I am trying to put an NVIDIA Tesla K20C into a Dell PowerEdge R720xd. I'm having a bit of trouble understanding the power requirements of the card. First, here is a picture of two pages of the same manual, which seems contradictory to me. One…
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Airport Express as extender, can I use RJ45 to connect device to it?

So, my situation is as follows. I have a network printer without wi-fi support. I have an Airport Express set up as a wifi extender (i.e. it just hangs in the power socket, repeating my wi-fi network, provided by another device). My question is -…
favoretti
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CAT5e RJ45 splitter with CAT6 network: compatibility & performance

I need to connect 2 PCs on a single RJ45 socket on the wall. The network is wired with CAT6 cables. I have seen a few RJ45 splitters that seem to do just that, but they are all for CAT5e cables. Here is the description of one of them: This splitter…
assylias
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