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192

There's no limitation of coaxial copper cable as a medium that would require it to be asymmetric. So it's not about the physical medium per se, but about how cable TV companies (DOCSIS cable modem ISPs) have designed and built-out the rest of their infrastructure over the last 50+ years. Cable ISPs' cable infrastructure carries a lot of baggage from the ...


130

From my experience, those retention clips break off a lot on the first sort of cables - those are fine for cables that are well protected and/or going to be plugged in and forgotten, but the moment those clips bend the wrong way, they break, and you end up with a cable that dosen't clip in place. They also snag each other sometimes and are just a PITA. ...


119

When retracting a RJ45 plug through narrow tubing or around corners, the clip tends to snap off, effectively making the network cable useless in most environments. The rubber dome (most commonly referred to as a cable boot) nearly always prevents that from happening. You wouldn't know how many network cables I've seen with broken off clips.


104

If you don't want to replace the cable or install a new jack, you have a few of options: Glue it into a coupler or a short extension like one of the following (with the coupler you will need another short run of cable on the other side): Repair it with a zip tie. Use this guide for instructions: http://www.instructables.com/id/Repair-a-Broken-Ethernet-Plug/...


99

That is a 19 pin USB header connector. The header connector would plug into your motherboard, and then you could add internal USB devices. I have one which I believe is used for a card reader and I think I also had to connect a header to enable a second USB 3.0 port that is built into my case. I'd have to actually look in my case to double check what I used ...


96

The SuperSpeed transfer mode requires a USB 3.0 or higher cable. Earlier spec cables will still make a connection but at a slower rate. Source 1: USB 3.0 - Wikipedia The VBUS, D−, D+, and GND pins are required for USB 2.0 communication. The additional USB 3.0 pins are two differential pairs and one ground (GND_DRAIN). The two additional differential ...


62

That was used to connect the CD drive to the soundcard / mainboard, it's an (analogue) audio connector. Good definition of the CD-ROM cable here A cable used to send audio CD sound to the computer's sound card. When playing audio CDs, CD-ROM drives output analog sound to both a headphones jack and external connector just like a CD player. This ...


62

Definition of a cross over cable: A cross over cable is typically used between devices with the same type of interface (ie computer to computer, router to router, etc). Ethernet cables are usually made as an A or B type interface (which matters simply how it is wired. A crossover simply has A on one end and B on the other. What is happening: Basically ...


62

That is a male USB3 (always colored blue with 19 pins) header cable. I don't know why it would have a male USB connector at the end of it though.. Perhaps it's designed for direct USB access from another host or connecting USB components internally, like a USB port on your case. I suspect OP has misidentified the connector at the end of the cable. It is most ...


60

A "USB 3.0 connection" requires a USB 3.0 cable. Some USB 3.0 devices can be connected and operated as a USB 2.0 device (at USB 2.0 speeds), using a USB 2.0 cable. However, speed is not the only issue. There are at least three important differences in cable construction between the two standards. Related to speed: The USB 3.0 cable has 9 internal ...


53

The power switch provides an active low input to a logic gate within the power supply circuit. This provides a low current logic low (ground) gate pulse to a BJT transistor biased to an isolated 5V source with the maximum current likely much less than 10mA. This portion of the circuit is also electrically isolated from the rest of the power supply circuit ...


46

if this is a floppy cable that twist serves to select how the first (before twist) and second drive (after the twist) will be A:or B: from http://www.pcguide.com/ref/fdd/confCable-c.html You will also notice that there is an odd "twist" in the floppy cable, located between the two pairs of connectors intended for the floppy drives. Despite the fact ...


46

Simply plugging the cable in backwards would not cause what you observed (although it isn't exactly good for the drive). It should be noted that hard drive circuity has safety resistors on it to protect the logic board should there be an over-volt condition on the power connector. This is standard practice on most low-voltage electronic equipment. Even ...


44

It's not the length (100 meters -approximately 330 feet- is the max for ethernet UTP), but most likely the quality of the cable is bad. Maybe the cable is damaged internally or at some point was pinched severely. This is not always visible from the outside. Could also be that one or both ot the RJ45 connectors is crimped on badly or is incorrectly wired. (...


40

There's no real way to tell if the hard drive's fine but this shouldn't happen. Molex cables are keyed - though I suppose if it was truly dodgy the end connecting to the external power supply might be odd. Even then, typically what goes into the device is 'pure' DC. As for power supplies, you might have a fuse or a blown out component like a voltage ...


39

People do all kinds of things that aren't a good idea. If you read the answers on your linked question, you'll see that some people managed to get away with it and some didn't. Dishwasher Use Personally, I wouldn't use a dishwasher at all for cables (or other electrical/electronic components). The detergent requires very hot water to thoroughly dissolve ...


39

There could be a modem connecting to the switch/router gear that is in the other side of that Ethernet connection, however a modem is not mandatory. Depending where you are, it is entirely probable that your connection does not use a modem of any sort. For example, in New Zealand we have fibre to the home/fibre to the building. Fibre does not require a modem ...


37

Yes, it's safe. The base connector is identical to the original Micro-B, only adding the USB 3.0 data send/receive lines on the side. (USB 3.0 is backwards-compatible with 2.0, and this applies equally to all connectors it introduced – both the full-size and micro-size, type-A and type-B ports). The end result will generally be the same as if connecting the ...


34

All answers are incorrect if OP meant the link operating at High-Speed USB2.0 communication speed (480 Mbit/s). The length of a USB communication link is limited by the USB architecture of having five hubs in the link. The USB protocol requires that USB devices send back handshake packets as ACK, NAK, NRDY, etc. These responses must come back to host ...


34

On the PC floppy-drive cable, one of the wires is activated when a request is made to access drive A:, and another is activated when a request is made to access drive B:. Additionally, one wire is activated when the drive A: motor should turn on, while the other does likewise for drive B: (obviously when code is going to want to access drive A: it's going ...


33

This is a DisplayPort — it's pretty common on desktops and quite a few laptops.


32

That's an anti-snag boot meant to protect the clip when pulling the cable through other cabling, conduit, and other tight spaces. You can carefully clip it off if you don't care about the anti-snag capability. There are some other anti-snag styles that can work better in tight locations: I've found that first style works well in our 48 port ethernet ...


32

Yes, they are different. Display Port is a passive audio/video technology, Thunderbolt is active generic data technology. The hardware inside the cable is necessary to get the full data throughput. A Display Port cable will only carry Video/Audio to an attached monitors*, while a Thunderbolt cable is able to carry all sorts of other data, which is required ...


32

Ethernet auto-negotiates using (low-frequency) link pulses. It does not check or train the cable. Link pulses are exchanged on the two 10/100 pairs and for 1 Gbit/s, all four pairs do an additional link check each. Some Ethernet devices may fall back to 100 Mbit/s when 1000 Mbit/s has been negotiated but fails to link due to one or two missing pairs - 1 Gbit/...


31

Modems are not a requirement, at all. They just happen to be the common case in many parts of the world because they allow usage of existing (quite often old) telephony or cable television infrastructure to provide internet access. In many of the more developed parts of the world though (except the US, because we're still essentially a third-world country ...


22

What type of cable runs from the modem, to the wall outlet They are Coax cables. The first image shows an isolator, which is used to protect your equipment from surges from your ISP's upstream equipment (the CableModem Termination System). It incorporates high voltage capacitors to provide isolation to both the inner and the outer conductors of the coaxial ...


20

B-end is a Lenovo-specific 7-pin PS/2 connector, which you connect straight to Lenovo motherboard. See 3rd image from this auction for the details: http://www.ebay.com/itm/Lenovo-ThinkStation-ThinkCentre-FRU-43N9149-PS-2-Keyboard-Mouse-Cable-/251535857927


20

TL;DR: buy a few bottles of 91% isopropyl alcohol and a small bucket, dump all that in there and scrub the cables in there, then do a sponge bath and wipe with a non-static producing cloth (paper towel for instance). There's a couple of issues to concern with if you do wash them in the dish washer. First as you've noted, is the heat the coils or water can ...


18

In general, AWG is used for ampacity (i.e. how much amperage you can force down a conductor for a given wire diameter before it starts to heat). It is also a gauge for resistance (DC) or impedance (AC). When talking about resistance or impedance, it usually has to do with voltage drop. In the case of Ethernet we are talking about signal loss (voltage drop ...


17

Summarizing everything tl;dr The drive before the twist will be drive B while the one on the end will be A. This way, there is no need to "configure" the drives which drive (A or B) are they going to be and what they should listen to. They can be configured identically and the twist will swap the controlling input for them. Or quoting sawdust, from ...


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