Search for USB port in Topics


..guys, how could i add usb port to my old ibm thinkpad and anyone here can teach me how to convert a serial port to a usb port in a laptop. can i make that adapter at home? ..pls. help guys ..any instructables?, thanks

Topic by mij    |  last reply

USB ports? Answered

What are all those wires in USB ports used for? P.S : If I wire 2 USB ports in series, the voltage will not go up, right?

Question by .Unknown.    |  last reply

USB Port

I posed a problem regarding my TV Tuner card for which i got a very nice solution and my problem is solved. I have Two more problems. Yesterday i got a new detachable Hard disk with a capacity of 160 GB I have partitioned into two. Say D rive and H drive. Whenever i plug in my divice one of the USB port in the computer, i get a message lke this " Hi-SPEED USB Device attached to non Hi SPEED Hub. The recommendation is The USB main Storage Device will function at reduce speed. You must add a High SPEED USB Controller to the Computer to obtain maximum performance, Kindly let me know whether it is a software problem or a new hardware has to be installed.. Further when i referred to the CD i got along with the Motherboard, it says USB ports with a speed 2.01 will support if i have SP1 and above. I have already having SP2. Kindly advice me. Secondly I am not able to open D Drive. When i attempt, I get a message saying that it is not it is not accessible. How to open this d drive How can i format the the new hard disk. I have no file or folder in the new hard disk. Regards, Bala TV

Topic by balatv44    |  last reply


In usb, can i join both side micro port??????????????

Question by thumarrushik    |  last reply


I was wondering......i know computers can give electricty through USB, but can they recive it through a USB port?

Topic by mythbusterma    |  last reply

usb port diagram? Answered

Could someone pease give me the usb connections? i only want to know where the +5 and -5 are but you can give it all. thanks everyone!

Question by didgitalpunk    |  last reply

USB plug ports?

For a project I am thinking about undergoing, I need to know which lead on a male usb plug does what. Could anyone tell me please? Use the image as a guideline.

Question by A-Nony-Mus    |  last reply

USB thing?

Is there a way to make a USB thing that lights up a led (<-- That's the easy part) and tells the computer that the USB port works?

Question by account3r2    |  last reply

A usb port on a cd player ?

I just thought of this the other day, is there a way to connect a usb port to a  portable cd player?

Question by pcsheep    |  last reply

Bluetooth speaker with Usb port

Hi, I need some help here..iI have a small 2.1 bluetooth amplifier and I would like to add on it a usb port inorder to plug my usb it possible?

Topic by VassilisT    |  last reply

additional usb ports on a laptop

Is there any way to connect additional usb ports to a laptop motherboard without a usb hub? say if you hook a usb port up to existing usb ports? help would be appriciated :D thanx in advance

Question by The Rusted Workman    |  last reply

Make a USB port wireless?

Hay all. I want to make a simple USB webcam to a wireless one. I heard about wireless USB adapters, but I can't find them on my local stores. So I want to make one. Is that possible?

Question by netbus    |  last reply

.HEX file to USB port? Answered

Lets say I have a .HEX file that looks something like this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nd I need to send that to a USB port.  What is the best way to do this?  I have an little app that will let me send data to my USB port of choosing, but I have to type this thing out by hand, 2 characters at a time, hit enter, rinse and repeat, and then after its all entered, click send data.  That worked fine for sending a few bytes to test some hardware to verify data sent back form the device was correct and that it was receiving the data correctly, but that won't work here, for obvious reasons.  Is there some sort of free software I can download to shove .HEX files through a USB port?  I am sure there are, but I can't find any, Google is not being kind to me today.

Question by Electric Spectre1    |  last reply

USB to VGA? Answered

Is there an easy way to send video from the usb port to the VGA input of my TV. We are using Ubuntu 10?

Question by emit    |  last reply

Connect my circuit streight to USB port? Answered

Can I connect a circuit streight to the USB port? There are USB driver circuits available in the market. Previously I used to connect my circuits to LPT port or RS232 port. Can I connect those circuits to USB port without any other driver circuits?

Question by artworker    |  last reply

Serial port not found?

I tried to use my arduino today but COM3 couldn't be found. I tried it with older versions and other USB ports but it still didn't work. Anybody knows how to fix it?

Question by yonch    |  last reply

How can i make a small speaker system with USB Ports?

What I'm wanting to build is for my father. The idea is i give him a box with a line outm a small lcd display and four USB ports, each with a button to 'select them'. This is so i can give him 4 USB sticks with 'Classical, Jazz, Opera and World' written on them and he can choose what he wants by pushing the select button by the port, which would then channle the main porcessor to search the disk, pull it up on the screena nd then offer the normal push play or stop, next last etc... buttons I am supposing that I can use a cheap USB Flash MP3 Player to be the heart of the system which I'd like to make Main's powered, Anyone got any ideas?


I want to increase the amps to my laptop's external USB ports. How crazy is this plan? Answered

My laptop only has two external USB ports. I keep a mouse plugged into one constantly, but I now need to use an external USB drive that needs more amps than one port can supply.  I use a Y cable that pulls power from two ports, but I can't use my mouse at the same time. (Which is really a non-starter with the work I'm doing.) There are about 5 internal USB buses available, all of which have one port available, all drawing minimal power (fingerprint sensor, web cam, sd card reader, etc.)   My wacky idea is to tie the voltage pins from one of these 'spare' ports to one of the external ports to provide the amps needed, similar to what the Y-cable is doing but keeping it internal and keeping one more USB port available.  I've had this laptop apart and know that I can do the wiring, but I'm curious about how high the potential is to cause massive damage. Any pointers?

Question by Grathio    |  last reply

USB generator

I am building a small crank-powered generator for a college electronics class that will power a USB port. I know a USB port supplies 5V DC, and that my generator will obviously produce AC current, but I'm not sure the best way to convert AC to DC, then how to step my voltage up to 5 volts. My generator uses 6 wire coils in a circular pattern. 12 neodymium magnet rotate over the coils. This doesn't seem like the most efficient design ever, but that part is a stock university kit, the wiring is up to me. I've only been able to test each coil at a time, and each one produces .5-.7 VAC. Do any electricians out there have some tips? When all is said and done, I'll definitely be posting an instructable on this.

Topic by fortneja    |  last reply

PIC Programmer Com Port?

Hello, yesterday, I bought a PIC16F877A Microcontroller and This programmer. I also installed PicPro USB. I am using the serial to usb cable that came with it. The programmer has a location of  Port_#0001.Hub_#0009 in device manager. Now when I open PicPro USB and set it to  port 1, It gives me an error saying: There appears to be a problem accessing the COM port. I cant seem to find whats wrong. [Edit] I think that It is connected to port 24 (hence its name: Prolific USB-to-Serial Comm Port (COM24) ) and the problem with PicPro USB is that it can only have 1 digit port numbers, how do I fix that? Thanks.

Question by Seifpic    |  last reply

USB Flipper

Here's an idea for those USB connectors in hard to reach places. main site: press:;_id=222902730 video: contact info: Not my idea, saw it recently in eetimes.

Topic by backtalker    |  last reply

USB to Arduino USB Wirelessly?

I am currently working on a robot that has a deadline in about a week, and so far, there is only one problem we haven't solved yet: Communicating with it without a wired connection. Currently, we have a program on a desktop send the Arduino the gcode via USB cable. What we would like to do, is send that information without actually having it connected with a wire. Originally, we were going to have a Bluetooth module connected to the arduino directly, and have the desktop program communicate with it. Unfortunately, due to time constraints, we haven't managed to get it working, and would like to move onto plan B: communicate through the USB port, and essentially leave the Arduino untouched.  I did a little googling, and I wasn't able to figure out very much on Bluetooth dongle -> Bluetooth -> USB that was actually positive and helpful. Currently, we have a few HC06 bluetooth modules lying around, as well as a few spare Arduinos. I was thinking of connecting one of the modules to another arduino, connect that arduino to the robot's arduino, and communicate with the first arduino via the bluetooth. Essentially, the first arduino would be an interface for the second one. Would this work? How would I go about doing it? In short: What would the best method to communicate between a PC and the USB port of an Arduino wirelessly be? Anything helpful is always appreciated, thanks!

Topic by RocketPenguin    |  last reply

USB charger? Answered

I want to make a usb charger with 3 ports in which I can plug my laptop adaptor (16v, 2.5A)and charge my phone and other usb devices. I am planning to use a Lm-317 to regulate the voltage. Will it be fine or I need to consider something else also? And please don't tell me I can buy one!

Question by Ahtasham Ahmad Mohtashim    |  last reply

usb in car

PLEASE HELP. i am trying to find a way to install some usb ports in my car to be used as power supplies for various devices (mp3, nav systm,phone).  i hate clutter, so i'm trying to stay away from adapters for the cigarette lighter plug.  im pretty sure i need to reuce the volts and amps so i do not harm the devices.  please help. i dont even know where to begin.

Topic by lvlaveryk    |  last reply

Phototransistors interfacing with a serial port

So I really don't have too much experience with interfacing stuff and PCs (read: none) and I have a question. If I was to wire up about 5 phototransistors in series, all with a laser aimed at all of them, with the anode hooked up to TxD, and the cathode hooked up to RxD, and I had a program sending 500 bits to it per second, and checking for response.. will it basically be able to detect if one of the lasers are broken? Thanks!

Topic by cvxdes  

Why are my usb ports broken? Answered

I stripped a usb extender and used it for small projects in the past, when I first tried this it broken my back usb ports, two of them (using only one). So I did it again sometime after and it broke the data inputs of the usb ports. So I tried once more but with it on my usb hub and it broke the last back one. So now I am stuck with two usb ports in the front. I just want to know if I can fix this and HOW and why this is happening. Also, if there is a safe way that I can do this (other than using an arduino) please let me know. :)

Question by knexpert1700    |  last reply

Is there a MP3 Player that has a USB port on it? Answered

I have enough music to fill a portable hard drive, but I don't want to buy a Zune or an iPod. If not, does anybody else have a solution? I am hoping that I won't have to resort to 

Question by Pinaz9    |  last reply

Multi-port USB power supply

My wife and I charge our tablets and phones in a central location.  There are so many wall warts and not enough outlets!  I would like to have a single USB type of power supply that can charge at least 6 devices at the same time.  Each port should be able to supply 5 volts DC at 1 amp or better.  I've purchased two different 4 port wall warts and they just don't have the juice to get the job done.  Any ideas?

Topic by Tgrshaw    |  last reply

Can usb ports share a ground?

Im converting an old printer (25 pin) switchbox into a switchbox that will be used for my monitor, speakers, keyboard, mouse and two computers. The problem is that the monitor has 15 pins, the speaker has 3 pins, and the two usb ports have 4 pins each meaning that I would need 26 pins rather that 25. I could just solder the left and right speaker pins together and make those two 1 pin, but i would rather not have to do that. My question is can two usb ports share a ground pin, meaning that it would only need 7 pins rather than 8.

Question by danielemur    |  last reply

How to repair the USB Port of the laptop?

Plastic Din (having grooves for pins on it) of the USB port of my laptop has come out. How can I fix it? FYI, it got stuck in the USB port (male) of the cable while pulling it out after use. I have somehow taken out the plastic din from the cable. Now I do not want to simply insert it in the USB port of the laptop since it will get stuck in the USB cable again when I use it next time. I need help to fix it properly.

Question by devender02    |  last reply

female USB port power question

Im odiously new and i cant find where to attach the positive and negative . thanks in advance

Topic by rubberbanddude    |  last reply

How to replace usb ports on ps3?

I had a ylod ps3(past warranty) and attempted to repair it using the ylod oven instructable. It worked, however the usb ports ended up melting during the process. This would not be a problem, as I do not use them much. Unfortunately, you have to have them to sync the controller though. Does anyone know how I can replace the usb ports, or just add more. Any help would be greatly appreciated.

Question by ademaree    |  last reply

USB Driver

I got a USB cable fro the dollar store today for, well, one dollar. I was wondering if there was a way I could control the voltage output from my computer. I stripped the cable (it was male to male), and tested the output with my multimeter, too. I am getting about 5vdc, is that normal? I thought I got more out of the USB port. Like I said, I was wondering about any opensource usb control program I could use to control the USB voltage. Is this even possible? Also, I can't program AT ALL, or understand it, either.(if it matters)

Topic by John Smith    |  last reply

Are the usb ports on tablets usually wired to supply power?

I have been told that mini and micro ports on tablets are not powered is this true?

Question by ronarosa    |  last reply

Android USB OTG?

How to measure voltage at micro usb port on android with multimeter???

Question by PavleP    |  last reply

USB battery

Hi, Last summer I made a solar charger(maybe I'll post some pictures), I used a 5v 320mA solar panel, 5V regulator and a USB port. So now I can charge my cellphone and mp3-player through USB. This works fine, but I would like to make an USB battery that I can charge and take with me.. Something like this I have no clue on how to make this. Can anyone help me with this ? I have some li-poly batteries so I would only have to know wich electronics to use and how to solder them :) The battery pack should be charged through USB and have and USB output :) Thanks in advance, Niels

Topic by D-Nelis    |  last reply

The USB ports are not working on my desktop system.?

The system recognizes the USB Ports but when a USB powered device is attached to the USB Port the system stops and hangs. Reloaded the USB drives but the problem continues. Could there be a problem in the motherboard, If so how to diagnose this fault? What could be the problem and how to solve? A. S.  Bhasker Raj India?

Question by techmind48    |  last reply

Back USB Ports Not Recognizing USB Drive

I recently (2 hours ago) made a case for USB drive because the case "broke" off. Anyway, my main USB ports on the front are on the bottom, with a stiff port cover over them. This makes it virtually impossible to use my USB drive now, as I cannot fit it in the tight space. So I want to use one of my 4 ports on the back. My problem is that when I plug the USB drive in, it just will not recognize it. I tried it it in my mouse port, keyboard port, everything. I tried it with another USB drive to make sure I just didn't ruin my first one; it wouldn't recognize it either. Maybe I'm missing something, or being ignorant, but I can't seem to figure out why it won't recognize it, and what can be done about it. Is there some menu like in the Control Panel (though I checked) that enables the ports, or what? I really to have to go case-less. Thanks! Edit - I'm running Windows XP Home.

Topic by Bran    |  last reply

Can you wire USB Ports in series?

Hi, All. New to the forums, but have used several instructables and love this site. I'm currently trying to make a notebook cooling fan using a 12 Volt fan pulled from an older computer. Obviously I can wire it to the USB ports, but the 5V I'm getting there aren't enough. Would it be possible to wire 2 usb connections in a series, giving me 10V at 500mA, or am I just asking to fry my ports? I've seen some external hard drives that use 2 USB ports for power, so I'm assuming it can be done, but I didn't know if you needed anything other than a series connection. Thanks!

Topic by doublec5    |  last reply

Turning one USB port to two ports

(If this is in the wrong forum, please excuse me and let me know where I could put this.) Hello all, I'm in the process of getting my electronics together for doing bikepacking and could use a hint or two on how to resolve this.  Looks like I'm going to have a number of USB powered items that I will be rolling with.  I'm wanting to roll with a small solar panel too to help keep things powered up.  What I have is; - Nexus 7 pad - Phone (not sure yet what that will be) - Cygolite (360 lumens) - Cygolite Hotshot - Various batteries, Goalzero Switch, and two of these sticks - There maybe other items I either would need in the future or I've yet to list.  So one or two other units for the future. What I'm hoping I'll be able to do is roll with charging these pieces either with my solar panel, or when I stop at either a campgrounds or stop at a eating establishment.  When I do stop at a eating establishment, I'm hoping I could get things charged up as quick as possible.  So I don't want to waste time on a low powered USB port when my item would have taken a high powered USB port.  I assume that would a port that is 5W at 2amps, yes? So what I was thinking was, I know the AC adapter for the Nexus 7 has a nice high powered USB port.  So that would be one port.  I'm thinking of buying another cause they are pretty lite and compact.  So I would have two nice ports from AC.  (Now comes the more clueless part of me!)  So if I'm using some kind of splitter and splitting these two ports, it would seem that the amps get split in half........right?  Is there a way to avoid this and get something small and compact that would offer me 4 high-powered ports? Also it looks like the best way to go when I'm on the road is charge up the batteries listed above with the solar panel.  Then harvest what ever I can by the end of the night. Thanks for reading this and I'm open to any and all comments.  If there's someone blogging about this that knows alot more than I do, please do share!

Topic by User1    |  last reply

how do i fix my loose usb port?

When i put my usb into the port of my lap top it seem very loose and can fall out

Question by harvies    |  last reply

Serial to USB cable?

I have a serial cable for my Garmin Etrex, one side a serial plug the other goes to my GPSR. I am about to get rid of my desktop and only use my laptops but I don't have a serial port on either. Knowing this the serial cable is useless unless I spend another $40 - $50 on a "Serial to USB Converter". So, I cut it to see what and how many wires are inside of it and found only three. I was thinking of making my own cable but I don't understand the difference between the two ports. I saw the GPS 'ible here and it's no help unless you don't have the serial cable already... Here are my questions:1. As long as I connect the proper data in, data out and ground to the USB cable shouldn't it work?2. Are serial ports and USB ports that much different?I read a lot on the pfrancs website and i noticed a few of the connectors looked like they may have had USB cables hooked to them. I've searched and searched but came up with squat! If you have a really good understanding about USB and serial ports can you please help me or direct me to someone who can? Thanks in advance!

Topic by martymunch    |  last reply

Boot from usb.....

Ok I have a server compaq proliant running UBUNTU ( and i love ubuntu but i need to boot into SLAX ) And I am trying to set my computer to boot from usb but it dosent have that option because the usb ports are pci cards. So my question is is there a floppy disk image or cd image that will tell bios to boot from the usb port ?

Topic by littlechef37    |  last reply


I have been needing a usb hub for a while now, and I went on instructables to see if anyone had good ideas for usb hubs, and i found this and i got the idea to make a usb hub cow(7 port), using a can for teh body, and the hub would sit inside the can, and i would use usb extension cords, 6", to go from the hub to certain parts of teh body. The cow would be standing on its hind legs, and on its belly, the utters, would be 4 usb ports, then the arms would be sticking staright out, but i might have it so i can move them freely, and for each hand would be a usb port, then on the head, the mouth would be the otehr usb port, and i could use fiberoptics or somthing for the eyes to go to the LEDs on the usb hub if it had any, but thats my idea, if anyone has suggestions, they are appriciated, im probably going to make it in a couple weeks, and i will put it on here

Topic by Jesseton    |  last reply

USB devices on my PC cause 'Power surge'? Answered

I have Microsoft Windows XP sp2 running on a dell machine. Whenever I plug my camera in to get pictures off of it, the keyboard and/or mouse stop functioning and i receive an alert that says "power surge on hub port" or something similar. In order to get my keyboard and/or mouse to work again, i have to unplug my camera from the USB port and reset all ports. This just started happening today, even after I restarted. The error message in the picture below keeps coming up and closing itself in some kind of loop as I type this... Why does my camera cause other USB devices to malfunction when I plug it in the? Why does that error keep popping up every half a second? And, on top of all this, my tooth is throbbing for no apparent reason :( Help! -Nepheron

Question by nepheron    |  last reply

can i convert serial, parallel, mouse ports to usb so i can have a usb port on my laptop? Answered

My usb port on my laptop is busted, i tried to fix it but it didn't work so i am looking for something that can convert the ports that I have that still work into a usb female port! any help will be much appreciated!!!

Question by thecookiemonster    |  last reply

Will Shorting the data on a USB port make it charge my phone (or any device) faster? Answered

Will Shorting the data on a USB port make it charge my phone (or any device) faster? I've heard people say that but I'm not sure that's true, If it's true, Why does this happen?

Question by Yonatan24    |  last reply

Is there a way to convert a Kensington USB port lock into a flash drive?

I've had this thing forever, and I never use it. Any insight would be appreciated!

Topic by tcompton1