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I bought an 2 port usb kvm switch. why are there 2 usb connectors on each cable what do i do with the 2nd one. model gcs22u

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Pah,

The purpose for each of the USB plugs are likely 1 for your keyboard and one for your mouse to each of the PCs you attach to your KVM

Hope this Helps
Dave

Posted on Nov 06, 2008

  • David Preston
    David Preston Nov 07, 2008

    After reviewing the product on IOGEARS website I can say that yes indeed the USB connectors are one keyboard and one Mouse to each PC you wish to control



    product page is at the following link.



    http://www.iogear.com/product/GCS22U/



    Hope this helps

    Dave

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Number,one,three,five seven and zero not working and back space aswell


Is your keyboard connected via USB (a flat rectangular connector), PS/2 (A round connector, often it is purple), or AT connector (a round connector that is roughly twice the size as the PS/2 port for your mouse)? More than likely, it's connected via USB. Especially if it was bought within the last five or six years. If it is a USB keyboard, try plugging it into a different USB port and see if that helps. If that doesn't help then most likely the cord on your keyboard is damaged (kind of like when you have a pair of headphones that will only sound on one ear unless you jiggle the wire). If it's not the USB port (or you have a PS/2 keyboard) I would recommend you buy a new one. You can get one for as cheap as $10.
USB Connector: crasher35_6.jpg

PS/2 Connector: crasher35_7.jpg

AT Connector: crasher35_8.jpg

May 29, 2011 | Computers & Internet

1 Answer

How do I connect the front usb wires to my fic c51g motherboard header?


How to Install Front USB by Connecting Front USB Ports to a Motherboard?In order to have front mounted USB you must have 3 things.
  1. A case with USB ports in the front of it.
  2. A motherboard that supports front USB (usually)
  3. Appropriate wiring between the USB port and the motherboard
A case can support front USB in two ways: via a pass thru connection, or via a port to header connection. The former, pass thru connection, is compatible with all motherboards that have USB ports. Pass thru front USB Pass thru front USB works by having the ports on the front of the case connect to either a standard USB cable, or a fairly small rounded cable. The cable goes from the front of the case to a special slot cover with either a hole (for the standard USB cable) or a special connector for the rounded cable. If the pass thru USB had a standard cable, then you would simply plug the standard cable into one of your back USB ports. If it had a rounded cable, then you have a secondary attachment with something that looks like an old style SCSI connector. The attachment plugs into both the slot cover, and the back USB ports. The draw back of pass thru front USB is that you lose the ports in the back.

Many 3rd party devices that add front USB to a system use the pass thru system. A good example is this now discontinued Front IO panel
directron_1721_2292726
Front USB via a Port to Header connection In order to hook up a Port to Header connection you have to make sure that the wires from your port will connect to your motherboard's header. To do this you need to know what header you have, and what type of connector you have on the wires. You'll find information on both below.

Almost all motherboards these days have a USB header. Due to size and cost restraints many motherboards only have 2 USB ports on their back panel, but often they can actually support more then 2 USB ports. They will typically support additional ports via the use of a USB header. A USB header is either a single or double row of header pins on the motherboard that can be used to add additional USB ports to a computer via the use of an appropriate set of header connectors, wires, and a USB port. Each pin on the header corresponds to a wire inside a USB cable. These pins must be clearly marked so that you can hook them up to the wiring correctly. There are 2 common layouts for a USB header.

Intel Standard USB header Layout: (used by over 90% of motherboards)

instusb1a.jpg

Gigabyte Style USB header Layout: (used most commonly on Gigabyte brand motherboards)

instusb2b

Now that we know the types of headers we have to take a moment to understand the USB wiring. Understanding the wires First off: All USB cables have 5 wires. 4 of these wires are actively used. Here's a reference from the official USB standard.

instusb3

On a front mounted USB port you'll have either the first 4 wires connected to properly colored wires (red for power, white/orange d-, green/yellow d+, black for ground) or all five wires attached to the port (same as the former, but one extra black wire). Now where it gets tricky is how to attach each of those wires to corresponding pins on the motherboard.

The wires are "tailed" (attached to a header connector) using any one of a number of different types of connectors. Below you'll find a list of the common ones.

Common USB case header connectors 4 joined pins + 1 extra ground.
usbheader

Compatibility: Compatible with both header arrangements because of the extra ground. May not work with some odd arrangements To hook up carefully match each pin. For the Intel hookup you'll have the extra ground wire not attached to anything. For the Gigabyte hookup you'll have the extra ground hooked to ground pin on the motherboard, and the standard ground jumper will be over the missing pin on the header.

All pins separated

instusb6

Compatibility: Compatible with every header. If all the pins are separated the only real issue is lining up the pins with the appropriate places on your header. It should be compatible with all headers. Just make sure you read the writing on each individual connector. Please check the troubleshooting info at the end of the article for important information on this configuration

Power and Ground separate, d-, d+ joined Lian-Li style

Compatibility: Compatible with all common headers. This sort of arrangement is common to almost all Lian-Li cases. Make sure that you get the wires connected to your header in the proper order. If you find that the port does not function the most common cause is accidental reverse of the d-,d+. Try switching it.

All pins joined Intel style easy connector

usbinst4
making the Connection Once you know what type of header you have, and what type of connector you have on the wiring, you need to connect the two of them. In order to do this, you must first figure out what pin goes with what part of the connector. To do this, you should first consult your motherboard manual. Below you'll find an excerpt from a fairly recent motherboard manual for the Asus A7M266 motherboard. It's typical of a motherboard manual for a board using the Intel standard USB header.

instusb5

The first thing you'll probably notice is that the wiring from your case and the names of the pins might not quite match up name wise. This is a common problem. Motherboard makers and case makers really haven't decided on what to call each pin. Here's a rough list of names.

Power may be called: P, VCC, USB Power, Power, and PUSB. On wiring it's always red. Ground may be called: G, GND, Ground, and GUSB. D- may be called: USB-, USBP-, D-, or just -. D+ may be called: USB+, USBP+, D+, or just +.

To complicate things a bit more you'll probably notice that there's a number before each one. Take a look at the picture above from the USB hookup diagram for the A7M266.

You'll see that Asus decided to number the middle pins. On the first row (starting with pin 1, and marked with a 1) you'll find that they list D- as USBP2-, and D+ as USBP2+. The number 2 tells you a few things. First off: It's the 3rd USB port on the motherboard (they started numbering at 0), second it tells you that that D- and D+ must be used for the same port. Case manufacturers are just as likely to number their ports differently.

Take a look once again at the 4-pin joined picture: usbheader

Notice that you're D-'s have either a 1 or a 2 on them. These also tell you that they are part of the same USB port. (Remember, 1 port has 4 required wires). The numbering on the connector and the numbering on the header doesn't have to match.

To connect everything grab the following connectors: a same number D pair, (D-, D+), 1 power, and one ground. If your power and ground are numbered make sure all 4 are the same number.

Tip: Most cases that use all separated pins will bundle these together for you to make it easier.

Now, take your Power, D-, D+, and Ground and line the connector up with the appropriate 4 header pins on your motherboard. The header pins will be in a row under the Intel style, and in the Gigabyte style it will either be a row of 1 pin, a gap, and then 3 pins, or 3 pins, a gap, and then 1 pin. Press the connector down over the header pin and make sure it's firmly attached. Once you have done this go back and grab another set of connector wires (Power, D-, D+, Ground), and hook up your second front USB port. If your case has more then 2 front USB ports, and your motherboard has more then one front USB headers, then repeat the above as necessary.

Example: If you were hooking up the front USB on a A7M266, on a case with the pictured 4-pin joined connector type then: VCC lines up with USB Power, USBP2- lines up with USB1-, USBP2+ lines up with USB1+, and GND lines up with GND. For port 2, VCC lines up with USB Power, USBP3- lines up with USB2-, USBP3+ lines up with USB2+, and GND lines up with GND.

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1 Answer

6ft USB & Vga 2-in-1 KVM Switch Cable Pc/mac To USB KVM do I need an adapter or can I just use the vgas to usb so I can attach anolog monitor so I can adjust my RCA tru flat tv to my hp pavillion a320n...


The limiting factor is the older TV. Look on the back of it. Is there a blue VGA port? If no, then you can't use it without some sort of adapter. What inputs are available?

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USB Keyboard and mouse wont work with PS2 KVM with adapter


Have you tried rebooting once it is connected? Not sure if it makes a difference, but I know you can not hook up PS2 peripherals without rebooting.

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I have a Amconn KVM914RM (keyboard, video, Mouse switch) but with the older serial extension cords. Is there a USB version of the extension cables?


If you are asking if their is a KVM switch which work off of the USB ports , then yes. Newegg.com had a least a dozen of them for sale. 

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I have an old hard drive tower. I bought a printer today and the UBS cable is not compatible. How can I get the right cable?


Check the back of the printer, is there a another connector or only the usb?

if the printer has only usb, you would need to buy a usb card for your old tower
You would need to look inside your tower and check if you have a white PCI slot available

heres what it will look like

371bfa2.jpg

And heres a USB - PCI card that will fit into the white slot giving you the USB connectors needed for the printer and everything else

http://cgi.ebay.com/Internal-PCI-USB-2-0-Controller-Card-5-Ports-4-1-VIA_W0QQitemZ400008832746QQihZ027QQcategoryZ90718QQtcZphotoQQcmdZViewItemQQ_trksidZp1742.m153.l1262

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1 Answer

I have recently bought a KVM switch off ebay and have connected the two computers I needed to, upto the switch. The first time round the switch didnt work. To check the cables I shut down the...


Depending on the KVM (Brand, Model etc) there should also be a hot key sequence that will allow you to switch between the PC's. See if the hot key sequence works.
Also, is this a PS/2 KVM or USB ? In some cases with USB adapters you have to let the computer start up while it is set to that port. And if it is USB, does it also have a PS/2 connector? If it does, you want to use one or the other, not both. That can cause it to malfunction.

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2 Answers

Dead


    1. Check your Keyboard-Video-Mouse (KVM) switch. If the system is connected to a monitor, mouse, and keyboard through a Keyboard-Video-Mouse (KVM) switch, or console selector switch, then disconnect the switch and connect monitor, mouse, and keyboard directly to the system. If this solves the issue, please contact your switch manufacturer for support and compatibility on the switch. Some switches can have a firmware update applied to resolve common problems.

      Note: BladeCenter Telco chassis - The KVM module contains keyboard port, mouse port, Power LED, Location LED, Critical Telco Alarm LED, Major Telco Alarm LED, Minor Telco Alarm LED and a video port. The PS2 keyboard and mouse connectors are standard 6-pin Mini Din. The Telco alarms mirror the Telco alarms located on the front panel of the media tray because they use the same signal lines. The KVM module allows the connection of a VGA monitor for system maintenance and control. The video connector is a standard 15-pin VGA. The KVM module is hot-swappable. It is docked into an edge card connector located on the backplane:

      migr_40293_4.jpg

    2. If you have your system daisy chained for KVM capabilities using the C2T port (e.g. xSeries 330),
      then you must flash the C2T firmware after flashing the system BIOS, in order for the mouse and keyboard to work. Otherwise, after a BIOS flash, you will lose keyboard/mouse capabilities unless you walk up to each machine and push the select button.

    • If you are using NetBAY Advanced Connectivity Technology (ACT) CAT5 cabling in your rack server, instead of KVM cabling, click here for ACT information.

    1. Check for POST/startup errors. If you are getting a POST/startup error on the keyboard and/or mouse:

    2. Verify that all items are firmly connected to the correct ports, and that the cables are undamaged with no bent pins. The PS/2 style mouse and keyboard ports look identical, but are not interchangeable. The mouse and keyboard must be attached to the correct ports in order to be recognized by the system and to function correctly.
    3. Swap each item for known good units. If a new item works where the original did not, then the original component must be faulty.

    4. If the keyboard works during the POST/BIOS screens, but not in the operating system, check software logs for device driver errors. Contact your software vendor for more support in configuring the I/O devices.

    5. Check the F1 Setup error logs for system component failures or errors. These are found under Event/Error Logs. Troubleshoot suspect components further to determine if the hardware is faulty. If an IBM component is determined to be faulty, please contact your local IBM Support Center for warranty replacement of the part(s). Please have the Field Replacement Unit (FRU) / Customer Replacement Unit (CRU) part number and Machine Type, model and serial number ready.

    1. Run hardware diagnostics. Replace any parts found defective.

    1. fw.gif
    Download the latest diagnostics for your system
    1. If you can down the system, check the keyboard cable connector on the system unit for proper voltage.

    2. Power off the system.
    3. Disconect the keyboard cable form the system unit.
    4. Power on the system and check the keyboard cable connector on the system unit for the voltages shown:

      PIN Voltage (Vdc) 1 +5.0 2 Not used 3 Ground 4 +5.0 5 +5.0 6 Not used
    5. If the voltages are not correct, replace the system board. Otherwise, replace the keyboard.

    6. If these steps have not solved your problem:
    7. musekye318@yahoo.com

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    1 Answer

    ILink cable and laptop


    I would have to consult your manuals.

    I think that you are saying you want to connect USB. Nearly all computer ports are the SAME. [USB A]. Devices, on the other hand have maybe 6 connections. A very popular one is like a mini-usb. Look in the manual for what it says it is, take the camcorder with you when you exchange the cable.

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