WEBVTT 00:00:01.120 --> 00:00:08.240 Sorry guys, what is the topic today? Oh, that's right. RJ45 Ethernet 00:00:06.879 --> 00:00:15.200 cables. We're going to tell you everything you need to know as fast as PO. Is this all you 00:00:11.960 --> 00:00:16.960 got? There we go. That's more like it. 00:00:15.200 --> 00:00:22.080 If you live on the planet Earth, you've probably seen an RJ45 Ethernet cable and 00:00:19.840 --> 00:00:24.960 a jack that it goes into at some point. So, it'll be on the back of your 00:00:23.760 --> 00:00:28.800 computer, on the back of your modem, network switch, wherever else like that. 00:00:27.039 --> 00:00:33.200 And then the cable plugs into it with a nice little locking connector just like 00:00:30.960 --> 00:00:36.719 that. But what actually affects the performance of this interface? The 00:00:35.200 --> 00:00:41.200 number one factor affecting the performance of the link speed is the 00:00:38.879 --> 00:00:46.079 rated link speed. So the most common speeds now are 1000 which runs at 100 00:00:44.000 --> 00:00:50.960 megabit per second, gigabit which runs at 1,000 megabit per second, and 10 00:00:48.879 --> 00:00:55.039 Gbit. However, because the ports and the cables all look the same superficially, 00:00:53.440 --> 00:00:59.039 you sometimes have to get down to the little details to see what speed a 00:00:57.199 --> 00:01:02.879 device is capable of running at. Another alternative is checking the manufacturer 00:01:01.120 --> 00:01:07.119 website or looking on the side of the box. One of the challenges, however, is 00:01:05.119 --> 00:01:12.159 that the way that manufacturers denote the speeds can often vary. So, here are 00:01:09.840 --> 00:01:16.880 four different ways that you might see 1 Gbit per second actually written. Data 00:01:14.799 --> 00:01:20.560 signal integrity is also affected by the cables. So, it can be rated at 10 Gbit 00:01:19.119 --> 00:01:24.720 all at once, but if you have a lowquality cable in between, your speed 00:01:22.640 --> 00:01:28.880 is going to be degraded and not down to 5 GB. It's going to go all the way down 00:01:26.560 --> 00:01:32.960 to gigabit. You can only go in full steps. So, make sure you have a cable 00:01:31.280 --> 00:01:37.520 that's rated for the correct speed and the correct distance. The most common 00:01:34.960 --> 00:01:42.640 cable types these days are Cat 5e, which is rated for 100 meters at gigabit 00:01:39.439 --> 00:01:44.880 speed, but only 55 m at 10 Gbit speed, 00:01:42.640 --> 00:01:50.159 and Cat 6, which is actually rated for 100 m at full 10 GB speed. However, it's 00:01:48.479 --> 00:01:53.680 not always easy to tell what type of cable you're looking at. So, look for 00:01:51.920 --> 00:01:57.600 the fine printing on the side of the cable in order to tell you exactly what 00:01:56.240 --> 00:02:01.520 type you're dealing with. It'll tell you the thickness of the wires inside as 00:01:59.360 --> 00:02:04.960 well as the category rating. It's usually pretty easy to tell if there's a 00:02:03.520 --> 00:02:08.720 performance problem with your network. For example, that file that normally 00:02:06.560 --> 00:02:13.440 transfers in 10 seconds might be taking a 100 seconds all of a sudden because 00:02:11.120 --> 00:02:17.760 it's running at a slower speed. Usually, the problem isn't caused by the network 00:02:16.000 --> 00:02:21.599 card itself. So, there's a few things that you can do before you go ahead and 00:02:19.440 --> 00:02:25.840 replace your cable. Number one, I always do this first, is take the connector and 00:02:23.840 --> 00:02:29.680 plug it in and pull it out a few times. This can scratch off any corrosion or 00:02:27.760 --> 00:02:34.000 oxidation on the connectors and can give you a better connection between the 00:02:31.599 --> 00:02:38.319 cable itself and the network interface card or the router. The next thing you 00:02:36.080 --> 00:02:42.560 can do is check your cable run. Do you have any really tight bends or any kinks 00:02:40.400 --> 00:02:47.280 in the cable? These can cause problems and they can make it so that your signal 00:02:44.400 --> 00:02:50.959 is degraded. Last thing I'd check is make sure that you're not actually 00:02:48.640 --> 00:02:54.640 running a cable that's too far. Maybe you have a single 100 meter cable and 00:02:53.120 --> 00:02:58.400 you go, "Oh, well, it's rated for 100 meters. you should be fine. What if it's 00:02:56.640 --> 00:03:03.360 running into a switch somewhere that has some internal cabling? What if that is 00:03:00.720 --> 00:03:06.800 then running another 1 m or 5 m cable that goes out to another device? That's 00:03:05.280 --> 00:03:10.000 where you can run into trouble with the distances. So, once you've checked all 00:03:08.640 --> 00:03:15.280 those things and you still aren't getting the connection you need, it might be time to replace your cable with 00:03:13.120 --> 00:03:18.560 something that runs a higher category or a higher quality 00:03:18.920 --> 00:03:25.599 internally. Hey guys, thanks for watching this episode of As Possible on 00:03:23.680 --> 00:03:29.360 Techquicki. If you enjoyed it, make sure you subscribe and also don't forget to 00:03:27.280 --> 00:03:33.120 hit that like button. It helps us out a lot. Share this video with anyone you 00:03:31.280 --> 00:03:37.200 think might benefit from it. 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