1 00:00:06,450 --> 00:00:08,910 - Let's discuss the main power supply connectors 2 00:00:08,910 --> 00:00:11,430 you ought to know for the exam. 3 00:00:11,430 --> 00:00:15,600 The most common form factor used in PCs today 4 00:00:15,600 --> 00:00:19,890 is advanced technology extended, ATX. 5 00:00:19,890 --> 00:00:21,930 Depending on the type of ATX, 6 00:00:21,930 --> 00:00:24,780 the main power connector to the motherboard 7 00:00:24,780 --> 00:00:27,720 will usually have 24-pins, 8 00:00:27,720 --> 00:00:32,720 or 20-pins and a separate 4-pins over here 9 00:00:32,730 --> 00:00:34,833 which can be separated if necessary. 10 00:00:36,150 --> 00:00:41,150 Or 20-pins only for much older ATX power supplies 11 00:00:41,910 --> 00:00:44,850 but generally you'll see 24-pin. 12 00:00:44,850 --> 00:00:48,390 And today's systems use power supplies that adhere 13 00:00:48,390 --> 00:00:53,390 to one of the ATX 12 volt, 2.X standards. 14 00:00:54,180 --> 00:00:56,040 The key is compatibility. 15 00:00:56,040 --> 00:00:59,160 When replacing or upgrading you need to find 16 00:00:59,160 --> 00:01:01,140 a compatible power supply 17 00:01:01,140 --> 00:01:03,030 according to those specifications 18 00:01:03,030 --> 00:01:07,800 and get it from a reliable power supply manufacturer. 19 00:01:07,800 --> 00:01:12,090 So that's the main power connector, your 24-pin ATX. 20 00:01:12,090 --> 00:01:14,340 Most of today's motherboards have an additional 21 00:01:14,340 --> 00:01:16,920 4-pin or 8-pin, 22 00:01:16,920 --> 00:01:21,920 more likely an 8-pin 12 volt power port for the CPU, 23 00:01:22,290 --> 00:01:25,383 which is referred to as EATX12 volt. 24 00:01:26,550 --> 00:01:29,280 A typical power supply offers one or two 25 00:01:29,280 --> 00:01:32,400 4-pin connectors, or more commonly, 26 00:01:32,400 --> 00:01:36,033 a single 8-pin connector as shown here. 27 00:01:37,560 --> 00:01:40,410 And this is for that extra power to the CPU. 28 00:01:40,410 --> 00:01:42,630 And you can see it's labeled here. 29 00:01:42,630 --> 00:01:46,743 Let's look at two examples of ATX power and CPU power ports. 30 00:01:48,780 --> 00:01:52,620 First here, we have a CORE i5, bit of an older system 31 00:01:52,620 --> 00:01:55,080 as of the recording of this video, 32 00:01:55,080 --> 00:01:57,690 and you can see the main power connector, 33 00:01:57,690 --> 00:01:59,853 24-pin ATX down here, 34 00:02:00,840 --> 00:02:04,830 and over here, you can see the 4-pin CPU power 35 00:02:04,830 --> 00:02:08,160 for this particular CPU. 36 00:02:08,160 --> 00:02:12,243 So for this CORE i5, we just need a 4-pin CPU connection. 37 00:02:13,380 --> 00:02:15,333 So the power supply has to match up. 38 00:02:17,400 --> 00:02:20,340 But here we have CORE i7 39 00:02:20,340 --> 00:02:23,763 and here's your main 24-pin ATX power, once again, 40 00:02:24,660 --> 00:02:26,760 and here we have the 8-pin and 41 00:02:26,760 --> 00:02:28,980 here's a blow up of that. 42 00:02:28,980 --> 00:02:33,243 An 8-pin CPU connector, EATX12 volt, 43 00:02:34,590 --> 00:02:37,413 also known as a 4+4 pin. 44 00:02:38,310 --> 00:02:41,640 So definitely know the ATX 24-pin 45 00:02:41,640 --> 00:02:44,913 and the CPU 4-pin and 8-pin connectors. 46 00:02:48,270 --> 00:02:50,850 It's also important to know how many of each type 47 00:02:50,850 --> 00:02:53,460 of power connector you need when planning 48 00:02:53,460 --> 00:02:55,290 which power supply to use. 49 00:02:55,290 --> 00:02:57,300 You must be familiar with each type 50 00:02:57,300 --> 00:02:59,520 of power connector for the A+ exams. 51 00:02:59,520 --> 00:03:04,520 So be prepared to identify them by name and by sight. 52 00:03:04,920 --> 00:03:07,740 So here we have an SATA power connector, 53 00:03:07,740 --> 00:03:11,793 serial ATA, that is a 15-pin connector. 54 00:03:13,770 --> 00:03:16,350 It only uses five wires though. 55 00:03:16,350 --> 00:03:21,350 And those are 12 volt, 5 volt, and 3.3 volt 56 00:03:22,020 --> 00:03:25,233 in order here, yellow, red, and orange. 57 00:03:27,330 --> 00:03:28,860 So we use those for hard drives, 58 00:03:28,860 --> 00:03:30,543 for optical drives, and so on. 59 00:03:31,440 --> 00:03:33,240 Here we have a Molex power connector 60 00:03:33,240 --> 00:03:35,373 also known as a peripheral connector, 61 00:03:36,450 --> 00:03:38,100 and that's the old school connector 62 00:03:38,100 --> 00:03:40,980 that we used to use for IDE hard drives. 63 00:03:40,980 --> 00:03:44,910 But you might also see it used for internal case fans 64 00:03:44,910 --> 00:03:49,593 or other heat related devices. 65 00:03:50,790 --> 00:03:53,670 And so that's a 4-pin connection, four wires. 66 00:03:53,670 --> 00:03:56,460 You've got your 12 volt and your 5 volt. 67 00:03:56,460 --> 00:03:58,020 And the blacks are usually grounds. 68 00:03:58,020 --> 00:04:02,100 Now, in some cases, all the wires are blacks, 69 00:04:02,100 --> 00:04:04,800 but in this case, we do have color coded wires. 70 00:04:04,800 --> 00:04:07,383 So we know the black ones are grounding wires. 71 00:04:08,400 --> 00:04:12,030 And finally here, PCI express power connector. 72 00:04:12,030 --> 00:04:14,790 This is a 6-pin or an 8-pin. 73 00:04:14,790 --> 00:04:16,890 You can do either one depending on 74 00:04:16,890 --> 00:04:20,010 what your video card requires. 75 00:04:20,010 --> 00:04:22,200 Many video cards just require 6-pins, 76 00:04:22,200 --> 00:04:23,100 so you could do that. 77 00:04:23,100 --> 00:04:24,180 If it requires an 8-pin, 78 00:04:24,180 --> 00:04:26,730 you'll kind of put them back together 79 00:04:26,730 --> 00:04:28,203 and connect them as one. 80 00:04:33,540 --> 00:04:36,000 And here's a little table of that information. 81 00:04:36,000 --> 00:04:38,400 You want to be able to identify them by sight 82 00:04:38,400 --> 00:04:39,779 and by name. 83 00:04:39,779 --> 00:04:44,160 SATA, serial ATA hard drives and optical drives. 84 00:04:44,160 --> 00:04:47,610 It's a 15-pin power connector with 3.3 volts, 85 00:04:47,610 --> 00:04:49,413 5 volts, and 12 volts. 86 00:04:50,910 --> 00:04:52,950 Then Molex, also known as peripheral, 87 00:04:52,950 --> 00:04:56,010 used for case fans, older IDE hard drives, 88 00:04:56,010 --> 00:04:58,770 older IDE optical drives. 89 00:04:58,770 --> 00:05:02,850 4-pin connector, has a 5 volt, a 12 volt, 90 00:05:02,850 --> 00:05:04,590 two grounding wires. 91 00:05:04,590 --> 00:05:07,770 And PCI express, for video cards. 92 00:05:07,770 --> 00:05:08,790 You've got the 6-pin, 93 00:05:08,790 --> 00:05:13,470 which is version 2.1 for ATX 12 volt power supplies. 94 00:05:13,470 --> 00:05:18,063 And then the 8-pin, which is version 2.2 and higher. 95 00:05:21,000 --> 00:05:23,940 So memorize it, know your power connector types, 96 00:05:23,940 --> 00:05:28,560 your ATX 24-pin, your CPU 4-pin and 8-pin 97 00:05:28,560 --> 00:05:30,810 connector or combo connector, 98 00:05:30,810 --> 00:05:35,810 which is a 4+4, also your SATA power, 99 00:05:36,630 --> 00:05:40,020 your Molex power and your PCI express power. 100 00:05:40,020 --> 00:05:41,470 And that's it for this video.