1 00:00:06,720 --> 00:00:09,390 - Did you ever need to test your power supply? 2 00:00:09,390 --> 00:00:10,223 The best way to do it 3 00:00:10,223 --> 00:00:14,550 is to use a power supply unit tester, or PSU tester. 4 00:00:14,550 --> 00:00:17,010 And these are those 24-pin connectors 5 00:00:17,010 --> 00:00:19,080 that'll connect right to the main power. 6 00:00:19,080 --> 00:00:21,240 We're gonna show exactly how to use this, 7 00:00:21,240 --> 00:00:24,990 and how to read the results from that tool. 8 00:00:24,990 --> 00:00:26,590 Let's get started with that now. 9 00:00:27,450 --> 00:00:29,850 Here are some power supply testers, 10 00:00:29,850 --> 00:00:33,420 and they go from oldest to newest. 11 00:00:33,420 --> 00:00:35,580 And I also have a USB power tester, 12 00:00:35,580 --> 00:00:37,020 and we'll show each of these. 13 00:00:37,020 --> 00:00:39,600 Let's describe each one real quick. 14 00:00:39,600 --> 00:00:41,340 First, we have this old one here, 15 00:00:41,340 --> 00:00:45,660 which is an AT 20-pin power supply tester, 16 00:00:45,660 --> 00:00:50,430 which you can also use for the 20-pin connector, 17 00:00:50,430 --> 00:00:53,700 if it's separate from your 24-pin connector, 18 00:00:53,700 --> 00:00:56,193 if the 4-pin is separated from it. 19 00:00:57,390 --> 00:01:01,830 And you'll see here that we have the +12 volt, 20 00:01:01,830 --> 00:01:06,270 the -12, the -5 to +5, +3.3. 21 00:01:06,270 --> 00:01:08,640 The main voltages you wanna check. 22 00:01:08,640 --> 00:01:11,760 So this is an old school power supply tester. 23 00:01:11,760 --> 00:01:14,250 But if you come across some older power supplies, 24 00:01:14,250 --> 00:01:16,170 this is a good guy to use. 25 00:01:16,170 --> 00:01:19,650 Then we move into the Thermaltake power supply testers. 26 00:01:19,650 --> 00:01:21,540 And that's just one manufacturer. 27 00:01:21,540 --> 00:01:23,400 That's generally who I use. 28 00:01:23,400 --> 00:01:28,400 And here's one that has the 24-pin connector. 29 00:01:28,560 --> 00:01:30,933 So that works with ATX power supplies. 30 00:01:32,190 --> 00:01:34,830 And then on the other side, you have Molex, 31 00:01:34,830 --> 00:01:39,830 and you have a 4-pin for the CPU, 32 00:01:39,990 --> 00:01:42,930 and also an old school 4-pin mini connector, 33 00:01:42,930 --> 00:01:44,370 or Berg connector, 34 00:01:44,370 --> 00:01:46,380 which was used by floppy drives. 35 00:01:46,380 --> 00:01:49,050 So if you have those older devices with Molex 36 00:01:49,050 --> 00:01:52,320 or that type of thing, you can test it with this guy. 37 00:01:52,320 --> 00:01:53,850 And these lights light up, 38 00:01:53,850 --> 00:01:56,490 telling you whether the voltages are good or not. 39 00:01:56,490 --> 00:02:01,490 Same type of thing, +5, -5, +12, -12, +3.3. 40 00:02:02,520 --> 00:02:07,520 And also, this one has a +5 standby, 41 00:02:08,880 --> 00:02:12,810 which is what ATX power supplies use. 42 00:02:12,810 --> 00:02:17,730 If you have the computer plugged in and the computer is off, 43 00:02:17,730 --> 00:02:21,660 it's still feeding 5 volts for standby. 44 00:02:21,660 --> 00:02:24,150 So you can turn the computer on and it'll activate. 45 00:02:24,150 --> 00:02:27,510 Or it can be woken up on the land, or that kind of thing. 46 00:02:27,510 --> 00:02:30,600 So that's the +5 standby voltage. 47 00:02:30,600 --> 00:02:32,850 You may or may not see that lit 48 00:02:32,850 --> 00:02:36,450 on some power supplies, it depends. 49 00:02:36,450 --> 00:02:39,330 But usually, you will for ATX. 50 00:02:39,330 --> 00:02:40,680 And then the newest one here. 51 00:02:40,680 --> 00:02:43,710 This is the Thermaltake Dr. Power II. 52 00:02:43,710 --> 00:02:45,510 Got your 24-pin connector. 53 00:02:45,510 --> 00:02:48,783 Works with the latest ATX as of the recording of this video. 54 00:02:49,920 --> 00:02:52,980 And then here, we have the old school 4-pin Molex, 55 00:02:52,980 --> 00:02:54,870 which you might still have. 56 00:02:54,870 --> 00:02:58,530 But we also have those 8-pin power rails that you see 57 00:02:58,530 --> 00:03:01,620 most commonly now on today's ATX power supplies. 58 00:03:01,620 --> 00:03:05,460 And we showed that when we built the AV Editor computer. 59 00:03:05,460 --> 00:03:08,010 And you have your red and your black. 60 00:03:08,010 --> 00:03:11,673 You might be using these for video and hard drive and so on. 61 00:03:12,510 --> 00:03:15,030 Now these are passive devices. 62 00:03:15,030 --> 00:03:16,470 They require no batteries. 63 00:03:16,470 --> 00:03:21,470 They use the power flowing through the connection. 64 00:03:21,600 --> 00:03:24,210 So the computer has to be on for them to actually work. 65 00:03:24,210 --> 00:03:26,520 They operate on the power from the computer 66 00:03:26,520 --> 00:03:28,500 once you plug it in, which is, 67 00:03:28,500 --> 00:03:30,993 that's nice to passive, no batteries required. 68 00:03:32,940 --> 00:03:35,790 And finally, we have a USB tester. 69 00:03:35,790 --> 00:03:37,080 And this will test the voltage 70 00:03:37,080 --> 00:03:38,973 that's coming from your USB port. 71 00:03:39,840 --> 00:03:43,530 And it'll display how much, what the voltage is 72 00:03:43,530 --> 00:03:45,780 so you can make sure that it's working properly. 73 00:03:45,780 --> 00:03:48,380 And normally you want it to be right around 5 volts. 74 00:03:49,470 --> 00:03:51,600 And then you have outputs here. 75 00:03:51,600 --> 00:03:53,070 So you can plug in devices 76 00:03:53,070 --> 00:03:57,750 and see what they are pulling, as far as amps, 77 00:03:57,750 --> 00:04:02,190 what their draw is, electricity wise, from the USB port. 78 00:04:02,190 --> 00:04:03,390 So we'll show that, too. 79 00:04:04,380 --> 00:04:07,290 And let's show the, we're basically gonna focus 80 00:04:07,290 --> 00:04:10,260 on this guy and this guy, since they're the latest. 81 00:04:10,260 --> 00:04:12,240 So let's get into that now. 82 00:04:12,240 --> 00:04:14,820 Okay, so let's test the power supply. 83 00:04:14,820 --> 00:04:16,140 And first, we're gonna test 84 00:04:16,140 --> 00:04:19,800 the main 24-pin connector over here. 85 00:04:19,800 --> 00:04:22,470 Now, there's a couple warnings and notes 86 00:04:22,470 --> 00:04:25,320 that we have to talk about before we begin. 87 00:04:25,320 --> 00:04:30,210 First, you want to employ antistatic methods, 88 00:04:30,210 --> 00:04:32,280 your antistatic strap and mat, 89 00:04:32,280 --> 00:04:35,760 and connect to any earth bonding point, 90 00:04:35,760 --> 00:04:39,090 whatever you need to do to ground yourself 91 00:04:39,090 --> 00:04:41,940 so that we don't damage any of the equipment in here. 92 00:04:41,940 --> 00:04:44,426 And try not to touch any of the components 93 00:04:44,426 --> 00:04:47,070 when you're disconnecting cables. 94 00:04:47,070 --> 00:04:49,220 That's the best way, to be honest with you. 95 00:04:50,100 --> 00:04:52,890 Now, when you're dealing with power, you have to be careful. 96 00:04:52,890 --> 00:04:56,190 So first of all, you want everything disconnected, 97 00:04:56,190 --> 00:04:58,768 your power connection to the computer, 98 00:04:58,768 --> 00:05:01,683 make sure the kill switch is off, if you have one. 99 00:05:03,090 --> 00:05:06,000 And always read the manual, RTM, 100 00:05:06,000 --> 00:05:10,140 when it comes to these power supply testers. 101 00:05:10,140 --> 00:05:11,610 Because there's a certain procedure, 102 00:05:11,610 --> 00:05:14,610 there's a certain order or sequence to these things. 103 00:05:14,610 --> 00:05:19,610 For example, if we want to test this main power connection, 104 00:05:19,800 --> 00:05:22,800 we need to disconnect all the other power connections 105 00:05:22,800 --> 00:05:26,070 from the power supply, except for this main. 106 00:05:26,070 --> 00:05:27,600 So you gotta do that first. 107 00:05:27,600 --> 00:05:29,190 So I've disconnected those. 108 00:05:29,190 --> 00:05:30,750 And that means, optical drives, 109 00:05:30,750 --> 00:05:35,190 hard drives, the CPU, all that stuff, the video card, 110 00:05:35,190 --> 00:05:36,360 all has to be disconnected 111 00:05:36,360 --> 00:05:40,413 before you use this to test the main power connection. 112 00:05:41,340 --> 00:05:42,180 So I've done that. 113 00:05:42,180 --> 00:05:45,870 I have the computer disconnected and the kill switch is off, 114 00:05:45,870 --> 00:05:50,460 and I'm gonna remove the 24-pin-connector, 115 00:05:50,460 --> 00:05:53,103 and plug that into this guy, and we'll do the test. 116 00:05:55,350 --> 00:06:00,060 To remove it, remember there's a locking tab on the side. 117 00:06:00,060 --> 00:06:02,550 So you have to press that in and then pull up. 118 00:06:02,550 --> 00:06:04,200 Make sure you press that locking tab 119 00:06:04,200 --> 00:06:05,900 so you don't damage the connector. 120 00:06:06,840 --> 00:06:08,790 Okay, so I've pulled that out. 121 00:06:08,790 --> 00:06:09,990 And you can see, 122 00:06:09,990 --> 00:06:12,570 this connector is what we were talking about. 123 00:06:12,570 --> 00:06:15,540 This has that separate 4-pin. 124 00:06:15,540 --> 00:06:18,750 So you could test the 20-pin if you wanted to separately. 125 00:06:18,750 --> 00:06:21,180 But I'm just gonna test all 24 pins. 126 00:06:21,180 --> 00:06:23,280 So we'll plug that into the connector now. 127 00:06:24,960 --> 00:06:27,780 Okay, we make sure that that snaps into place. 128 00:06:27,780 --> 00:06:29,700 You wanna make sure it's locked 129 00:06:29,700 --> 00:06:32,130 so that we can start the test. 130 00:06:32,130 --> 00:06:33,990 So I'm gonna plug in the computer 131 00:06:33,990 --> 00:06:36,210 and plug it in the back now 132 00:06:36,210 --> 00:06:39,873 and turn on the kill switch, which is gonna supply power. 133 00:06:42,450 --> 00:06:44,040 Now, remember these are passive devices. 134 00:06:44,040 --> 00:06:46,680 They pull the power from the power supply. 135 00:06:46,680 --> 00:06:47,513 That's one of the reasons 136 00:06:47,513 --> 00:06:48,930 you wanna disconnect everything else 137 00:06:48,930 --> 00:06:51,090 before testing this 24-pin. 138 00:06:51,090 --> 00:06:52,230 So you get a blue screen 139 00:06:52,230 --> 00:06:54,130 and then we gonna hit the test button. 140 00:06:56,820 --> 00:07:00,990 Okay. And we get a another blue screen, 141 00:07:00,990 --> 00:07:04,110 which is good, unlike Windows. 142 00:07:04,110 --> 00:07:06,180 And you get your voltages here. 143 00:07:06,180 --> 00:07:09,330 If you see a red background 144 00:07:09,330 --> 00:07:11,580 on these types of devices, that's bad. 145 00:07:11,580 --> 00:07:14,250 A red background accompanied by beeping, 146 00:07:14,250 --> 00:07:17,280 means that you either still have things connected 147 00:07:17,280 --> 00:07:20,940 to the power supply or something is faulty. 148 00:07:20,940 --> 00:07:22,770 In this case, everything is good. 149 00:07:22,770 --> 00:07:24,470 And you can see the voltages here. 150 00:07:25,440 --> 00:07:28,290 For the 5 volt, it's at 4.9. 151 00:07:28,290 --> 00:07:31,050 For the 12 volt, it's at 11.9. 152 00:07:31,050 --> 00:07:33,170 For the 3.3 volt, it's at 3.3. 153 00:07:34,320 --> 00:07:37,590 And for the others, it's very close as well. 154 00:07:37,590 --> 00:07:40,860 Your -12 is at -11.9. 155 00:07:40,860 --> 00:07:43,530 Your 5 volt standbys at 5 volts. 156 00:07:43,530 --> 00:07:44,550 So we're in good shape. 157 00:07:44,550 --> 00:07:46,680 All the voltages are good here. 158 00:07:46,680 --> 00:07:47,880 And so that's what we want. 159 00:07:47,880 --> 00:07:49,090 We want that blue screen 160 00:07:50,407 --> 00:07:52,080 in order to see if the power supply is okay, 161 00:07:52,080 --> 00:07:54,090 if that 24-pin is okay. 162 00:07:54,090 --> 00:07:58,410 Standard deviation, for example, anything between 4.8 volts 163 00:07:58,410 --> 00:08:01,890 and 5.1 volts or thereabouts, is good. 164 00:08:01,890 --> 00:08:03,390 Normally, you'll be a little bit below. 165 00:08:03,390 --> 00:08:05,190 So 4.9 is fine. 166 00:08:05,190 --> 00:08:09,840 You know, 3.25 is okay. 11.9 is okay. 167 00:08:09,840 --> 00:08:12,690 You wanna be very close to that voltage. 168 00:08:12,690 --> 00:08:15,090 If one is way off, then you wanna make sure 169 00:08:15,090 --> 00:08:17,610 the connector is connected properly. 170 00:08:17,610 --> 00:08:21,603 And beyond that, it could be that one wire is bad. 171 00:08:22,530 --> 00:08:24,990 And we can actually test those wires individually 172 00:08:24,990 --> 00:08:26,640 with a multi-meter. 173 00:08:26,640 --> 00:08:29,790 And we'll show how to do that in a next sub-lesson. 174 00:08:29,790 --> 00:08:32,820 Now, when you're done with your test of your 24-pin, 175 00:08:32,820 --> 00:08:35,580 you wanna make sure you cut the power. 176 00:08:35,580 --> 00:08:39,543 So I've hit the kill switch, and disconnect the power cable. 177 00:08:41,040 --> 00:08:42,270 And you see the power went out, 178 00:08:42,270 --> 00:08:44,790 and that took about four or five seconds. 179 00:08:44,790 --> 00:08:46,260 So you gotta wait a little bit. 180 00:08:46,260 --> 00:08:47,940 Then we can disconnect this guy 181 00:08:47,940 --> 00:08:50,550 and plug him back into the 24-pin, 182 00:08:50,550 --> 00:08:53,100 and then power up our computer normally. 183 00:08:53,100 --> 00:08:57,450 However, I'm gonna move on to testing other ports. 184 00:08:57,450 --> 00:08:59,220 We're gonna test the Molex 185 00:08:59,220 --> 00:09:01,590 and also test the 6-pin connector 186 00:09:01,590 --> 00:09:03,633 and show how that works on here as well. 187 00:09:05,040 --> 00:09:08,040 So we need to leave the 24-pin connector in there 188 00:09:08,040 --> 00:09:10,620 to supply power to the power supply tester 189 00:09:10,620 --> 00:09:12,330 to test those other cables. 190 00:09:12,330 --> 00:09:16,170 So at this point, I'm gonna connect a couple cables. 191 00:09:16,170 --> 00:09:18,810 I'm gonna connect a 6-pin, 192 00:09:18,810 --> 00:09:21,690 which will simulate the video power connection. 193 00:09:21,690 --> 00:09:24,393 And you can do 8-pin also on this tester. 194 00:09:25,230 --> 00:09:30,040 And I'm also going to connect another 6-pin power connector 195 00:09:31,050 --> 00:09:32,673 to test for Molex. 196 00:09:33,690 --> 00:09:35,940 Okay, so I've made my first connection, 197 00:09:35,940 --> 00:09:40,890 and that's the PCI Express video connection. 198 00:09:40,890 --> 00:09:44,520 Now, another word of note here, 199 00:09:44,520 --> 00:09:46,560 when you're dealing with these testing devices, 200 00:09:46,560 --> 00:09:49,740 you can only test one connection at a time, 201 00:09:49,740 --> 00:09:53,640 and nothing else can be connected to the power supply. 202 00:09:53,640 --> 00:09:55,800 The only thing that could be coming outta the power supply 203 00:09:55,800 --> 00:09:58,170 is obviously the 24-pin connector 204 00:09:58,170 --> 00:10:01,530 and the individual connector that you want to test. 205 00:10:01,530 --> 00:10:04,590 In addition, when we're testing the video, 206 00:10:04,590 --> 00:10:07,740 normally that's a red port on the power supply, 207 00:10:07,740 --> 00:10:09,870 as we've shown previously. 208 00:10:09,870 --> 00:10:13,200 And if you have one of these 6-pin or 8-pin connectors, 209 00:10:13,200 --> 00:10:15,510 you wanna connect the red side 210 00:10:15,510 --> 00:10:19,350 to that power supply port, to that red port, 211 00:10:19,350 --> 00:10:22,410 and connect the black side here, if it is black. 212 00:10:22,410 --> 00:10:24,964 So now that we have that done, 213 00:10:24,964 --> 00:10:29,964 we'll hit the kill switch and run the test. 214 00:10:31,980 --> 00:10:33,900 The first test here is for the power supply 215 00:10:33,900 --> 00:10:36,300 for the 24-pin connection. 216 00:10:36,300 --> 00:10:37,473 Press the button again. 217 00:10:39,330 --> 00:10:41,820 And there's our PCI connection. 218 00:10:41,820 --> 00:10:45,060 And it shows it right at 12 volts, 11.9. 219 00:10:45,060 --> 00:10:46,080 And that's what it's supposed to be. 220 00:10:46,080 --> 00:10:49,320 That's the 12 volt connector for PCI. 221 00:10:49,320 --> 00:10:51,540 So we're all good with that. 222 00:10:51,540 --> 00:10:56,130 And I'll kill the power, and we'll disconnect this guy, 223 00:10:56,130 --> 00:10:58,023 and we'll connect a Molex to it. 224 00:10:59,730 --> 00:11:03,210 Okay, so now I've connected a Molex connector here, 225 00:11:03,210 --> 00:11:06,540 and the other end is going to the power supply, 226 00:11:06,540 --> 00:11:10,620 and that's just connecting to one of the 6-pin black ports. 227 00:11:10,620 --> 00:11:12,090 And so we'll do that test now. 228 00:11:12,090 --> 00:11:14,970 Make sure it's connected securely. 229 00:11:14,970 --> 00:11:19,970 We'll turn on the kill switch. Run the test. 230 00:11:22,200 --> 00:11:23,973 And that's the main power supply. 231 00:11:25,410 --> 00:11:26,460 Run the test again. 232 00:11:26,460 --> 00:11:28,440 And there's our Molex connector. 233 00:11:28,440 --> 00:11:30,390 And you can see here, it says MOX. 234 00:11:30,390 --> 00:11:31,830 You know which test you're doing. 235 00:11:31,830 --> 00:11:33,330 PCI means the video. 236 00:11:33,330 --> 00:11:35,850 MOX is a Molex connector, and so on. 237 00:11:35,850 --> 00:11:37,902 You can test all these things. 238 00:11:37,902 --> 00:11:40,353 You have the 5 volt connector at 4.9, 239 00:11:41,250 --> 00:11:43,590 and the 12 volt wire running at 11.9. 240 00:11:43,590 --> 00:11:46,350 So we're within tolerance. Everything is good. 241 00:11:46,350 --> 00:11:48,690 One thing to make note of with these tests 242 00:11:48,690 --> 00:11:52,770 is these testers do not do load testing. 243 00:11:52,770 --> 00:11:54,720 They're just checking the voltage, 244 00:11:54,720 --> 00:11:55,920 which gives you an indicator 245 00:11:55,920 --> 00:11:58,350 of whether or not the connection works, 246 00:11:58,350 --> 00:12:01,800 or if a single wire is bad, or what have you. 247 00:12:01,800 --> 00:12:04,440 So they are not load testers, though. 248 00:12:04,440 --> 00:12:06,030 If you wanna do a load test, 249 00:12:06,030 --> 00:12:08,550 that's a completely different thing altogether. 250 00:12:08,550 --> 00:12:10,770 Generally, you're not gonna have to do that 251 00:12:10,770 --> 00:12:13,350 or know that for the A+ exams. 252 00:12:13,350 --> 00:12:16,083 So having a power supply tester like this is okay. 253 00:12:17,130 --> 00:12:17,963 But keep in mind, 254 00:12:17,963 --> 00:12:20,820 when you're using any of these power testers, 255 00:12:20,820 --> 00:12:24,210 make sure that you're testing one connection at a time, 256 00:12:24,210 --> 00:12:26,700 and make sure you only have one item connected 257 00:12:26,700 --> 00:12:28,230 to the power supply. 258 00:12:28,230 --> 00:12:30,960 That single item that you're testing. 259 00:12:30,960 --> 00:12:33,330 Whether it's the 24-pin connector, 260 00:12:33,330 --> 00:12:36,240 or an individual connector like a PCI, 261 00:12:36,240 --> 00:12:41,240 or an SAT connection for power, or a Molex connector. 262 00:12:42,270 --> 00:12:44,820 Make sure that you have the computer turned off, 263 00:12:44,820 --> 00:12:48,540 the kill switch engaged in the off position, 264 00:12:48,540 --> 00:12:51,450 and have it disconnected as well. 265 00:12:51,450 --> 00:12:54,990 And, of course, antistatic methods, all that stuff. 266 00:12:54,990 --> 00:12:56,310 Make sure you keep this in mind. 267 00:12:56,310 --> 00:12:57,480 And probably, most importantly, 268 00:12:57,480 --> 00:12:58,890 read the manual whenever you're dealing 269 00:12:58,890 --> 00:13:01,080 with any types of power devices. 270 00:13:01,080 --> 00:13:02,850 Very important that you understand what you're doing 271 00:13:02,850 --> 00:13:04,650 before you attempt the test. 272 00:13:04,650 --> 00:13:05,733 And one last note, 273 00:13:07,080 --> 00:13:10,800 be careful when you're dealing with these, guys. 274 00:13:10,800 --> 00:13:12,630 These corners could be really sharp. 275 00:13:12,630 --> 00:13:14,940 And I've cut myself on these in the past. 276 00:13:14,940 --> 00:13:18,540 So you wanna be real careful with these corners, 277 00:13:18,540 --> 00:13:21,340 especially on the 24-pin connectors, 278 00:13:21,340 --> 00:13:24,120 and also those 6 and 8-pin connectors. 279 00:13:24,120 --> 00:13:26,670 Especially if they're brand new, they could be super sharp. 280 00:13:26,670 --> 00:13:29,010 So be careful with that. 281 00:13:29,010 --> 00:13:32,947 And that's about it for the power supply portion of this. 282 00:13:32,947 --> 00:13:36,300 Now, we're gonna get into the USB testing. 283 00:13:36,300 --> 00:13:38,610 Okay, so here we have a USB tester, 284 00:13:38,610 --> 00:13:41,643 and I've plugged it into one of the USB ports here. 285 00:13:41,643 --> 00:13:43,860 You can test any of these ports if you want. 286 00:13:43,860 --> 00:13:45,150 And so what we're gonna do 287 00:13:45,150 --> 00:13:47,343 is we're gonna turn on the computer. 288 00:13:49,050 --> 00:13:54,050 And when we do so, the output shows at 4.97, 4.96. 289 00:13:55,740 --> 00:13:57,660 So it's right around 5 volts. 290 00:13:57,660 --> 00:13:58,893 And that's what we want. 291 00:13:59,760 --> 00:14:02,700 Now, if you wanna check any of these ports, you can. 292 00:14:02,700 --> 00:14:04,560 But generally, they're all gonna be 293 00:14:04,560 --> 00:14:06,660 right around 5 volts for most devices. 294 00:14:06,660 --> 00:14:08,091 So this is a handy tool to tell you 295 00:14:08,091 --> 00:14:10,980 if a USB port has failed or not. 296 00:14:10,980 --> 00:14:13,920 Because individual ports can fail. 297 00:14:13,920 --> 00:14:15,240 It is possible. 298 00:14:15,240 --> 00:14:19,170 You can also check the amps that are being pulled 299 00:14:19,170 --> 00:14:22,320 from the outputs from a USB device. 300 00:14:22,320 --> 00:14:24,120 And so we'll do that as well. 301 00:14:24,120 --> 00:14:25,830 Now, whenever you change any connections, 302 00:14:25,830 --> 00:14:27,483 turn off the power. 303 00:14:30,990 --> 00:14:32,583 So we'll kill that power now. 304 00:14:34,200 --> 00:14:36,270 Wait for that to shut off. 305 00:14:36,270 --> 00:14:38,820 And first we'll use just a basic mouse, 306 00:14:38,820 --> 00:14:43,820 just to show what that'll pull, and connect that guy now. 307 00:14:43,980 --> 00:14:45,543 And we'll hit the power again. 308 00:14:53,340 --> 00:14:57,300 And you can see, is that about 5 volts. 309 00:14:57,300 --> 00:15:02,300 And you can see the draw from a USB mouse is basically 0. 310 00:15:02,490 --> 00:15:04,740 Now, if we were to do something that drew more power, 311 00:15:04,740 --> 00:15:08,100 you would actually see something as far as the amps go. 312 00:15:08,100 --> 00:15:10,233 So now we'll just connect a smartphone. 313 00:15:12,510 --> 00:15:16,803 And plug that smartphone in with the micro USB. 314 00:15:21,900 --> 00:15:26,900 Connect the other end to our tester and start up the system. 315 00:15:31,500 --> 00:15:34,920 And now you can see, again, we're pushing 5 volts. 316 00:15:34,920 --> 00:15:37,560 It's actually a little bit lower now 317 00:15:37,560 --> 00:15:39,750 'cause there is a little bit of a draw. 318 00:15:39,750 --> 00:15:44,750 And it's about .3, .4 amps from that smartphone. 319 00:15:45,060 --> 00:15:47,640 So it can charge the smartphone. 320 00:15:47,640 --> 00:15:50,430 And that's really all you're gonna get from a computer, 321 00:15:50,430 --> 00:15:54,420 somewhere in that range, .2, .3, .4 amps. 322 00:15:54,420 --> 00:15:58,697 If you wanna charge a phone faster and get more power, 323 00:15:58,697 --> 00:16:02,700 you wanna plug it into the AC charger, 324 00:16:02,700 --> 00:16:04,920 especially if you wanna do your adaptive charging, 325 00:16:04,920 --> 00:16:06,990 your fast charging, that kind of thing. 326 00:16:06,990 --> 00:16:08,700 That'll increase the amps, 327 00:16:08,700 --> 00:16:11,220 and then force the phone to charge faster. 328 00:16:11,220 --> 00:16:13,140 As it stands with the USB connection, 329 00:16:13,140 --> 00:16:15,210 it'll charge pretty slow. 330 00:16:15,210 --> 00:16:17,808 But you could see the power draw is very low 331 00:16:17,808 --> 00:16:21,030 for most devices, but it gets higher, 332 00:16:21,030 --> 00:16:25,429 as you use devices that have, say, moving parts, 333 00:16:25,429 --> 00:16:29,430 maybe a webcam, something that does recording, 334 00:16:29,430 --> 00:16:31,080 then your draw gets higher there. 335 00:16:32,370 --> 00:16:34,260 So a little USB testing. 336 00:16:34,260 --> 00:16:37,170 And again, you can test devices, see what the draws, 337 00:16:37,170 --> 00:16:39,510 and then also test each of your USB ports, 338 00:16:39,510 --> 00:16:42,210 just in case you think one is faulty. 339 00:16:42,210 --> 00:16:44,310 And so that's about it for the sub-lesson.