Question about 3Com (3C16593BN) 24-Port Ethernet Hub

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Hello the power supply on the hub has died, what are the output voltages and the pin arrangements on the hub? for the PSU.

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The voltage and current ratings should be stamped next to the power jack on the switch. They can be difficult to read so a light and magnifying glass can be helpful.

Posted on Jul 13, 2009

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Astec AA23080


You have to "short" two of the sockets.
Get the CORRECT two, or else you could kill yourself, or "fry" the power-supply.
Details: http://pcsupport.about.com/od/insidethepc/a/atx-pinout-24-pin-12v-psu.htm about the "pin-out" arrangement.

It would be easier/safer to connect the sockets to a motherboard, and connect a power-switch to the ON/OFF pins on the motherboard, and then use that power-switch.

Feb 10, 2014 | Computers & Internet

1 Answer

Test a power supply


if your PSU starts (fan is spinning) you can test it with voltmeter. to check voltages for motherboard do next:
1. take PSU out of case
2. put power cable in
3. with some wire connect green and any black on MB connector on PSU (20/24 pins)
4. fan should start spinning
5. use voltmeter to check voltages

this is just basic. real PSU test is when you have device that will burden PSU while testing...

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2 Answers

Power supply not powering on


mine 2 psu running doesn't. false where knowing won't am i?

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1 Answer

I have mixed up my power supply for the IH-U582FB with other power supplies. What is the output voltage and is the center pin positive or negative?


Usually on the back of the unit next to the power plug-in there is a small symbol that looks like this -(o+ the circle represents the center pole if the plus sign is beside it then the center pole is positive sometimes the voltage is listed there also if not then look on the label on the bottom and the voltage and amp rating will be found there

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1 Answer

HP P4SD, its running good with 4 gb RAM, P4 3.0ghz, and a couple sata hd. The problem is the fan output voltage, i havent been able to read the output chassis and cpu cooler pins voltage cause i can find...


"i can find my dmm?" did you mean CAN'T?
"its clearly off", what is off?
the fans are 3 pins,2 are power, one is RPM tachometer.
"it all works fine", so you can boot and run any OS, ?

"the voltage reads +12vdc", where, at fan or PSU?
the fans run off 12vdc, they are DC motors (from outside fan)
if the fan runs slow at 12vdc the the fan is bad or is a low RPM
fan, as some are, bigger fans run slow, for less noise.!

first is the CPU fan it must run full speed, if not the CPU will overheat in seconds and ALL CPU shut them selves (by there selves) this way. so CPU fan is first. what does it do... there....?

then BIOS screens. GOT BIOS UP? and running? with, ESC key pressed>.
let me guess your symptoms
1: PC dead. will not boot.
2: BIOS dead.
3: all fans DEAD,.
4: power switch works and all PSU voltages read right, (seems not)/?
5: if the PSU power wire reads right(DMM), matching the side sticker voltages, and the CPU is dead, the MOBO is dead, or CPU is toasted.


here is a modern PSU, sticker.
see 5 to 10 power lines, see them. all must read correctly
if a fan is dead, then its dead if 12vdc is present on the fan power pins.




psu-dsqaqngzuibs2svxh2bga4t0-2-0.jpg

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1 Answer

Ive antec pc case with twin 550 psu's there are five sockets


The Power supply willhave to pin #16 connected to pin #15 for an ATX power connector. It would bebest to purchase a Power Supply Tester for about $20.00, which will test allvoltages with a load and give you a go or no go signal. If you want to use ameter to check voltages, here is a link for the pin outs.
http://www.google.com/imgres?imgurl=http://www.smpspowersupply.com/ATX-connectors.JPG&imgrefurl=http://www.smpspowersupply.com/connectors-pinouts.html&h=368&w=478&sz=30&tbnid=nhDjb8Eq1fhorM:&tbnh=99&tbnw=129&prev=/images%3Fq%3Datx%2Bpower%2Bsupply%2Bpinout&hl=en&usg=__4IVO2NEw5aG-llLitG7OvnQVAsY=&sa=X&ei=seVFTL7uEcP7lwehzcHOBA&ved=0CDQQ9QEwBg

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1 Answer

What external power does SmartDisk FireLite FWFL120-N take?


Many USB power supplies will have the right plug. I picked one up by buying a cheap USB hub, What you want to look for (most likely on the bottom of the power supply) is VOLTAGE Output: 5.0 VDC, POWER Output: 1.0 amp or (1000ma) and the center hole is the positive side. I have even seen some BluTooth earpiece charges that supply what you need.

Hope that this will help.
AAirwolf

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1 Answer

I need the pinout of the jazzy 1103 ultra battery


Hello,
The Output voltage 24 - 29v ,Usually 27v. (And 4 Amps)
The Pin arrangement is Negative to the Left, Inhibit in the Middle, And Positive to the Right Assuming your looking into the plug itself from the front.
Always check with a Voltmeter first though because there are some chargers with the Opposite Pin Arrangement.

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