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Logitech cordless keyboard EX-90 is not connected and no key functions

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Because it is wireless it will likely need drivers to operate, make sure you installed the drivers off of the (likely) included disc. If you don't have these drivers are available for download from Logitech here: http://www.logitech.com/support-downloads . I hope this solves the problem.

Posted on Mar 15, 2011

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Posted on Jan 02, 2017

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What is logitech 810-000755 used for or what does it do


810-000755 is the part number for the Logitech C-bt44 USB receiver for the Logitech Cordless Desktop EX 100. See http://support.logitech.com/en_us/product/cordless-desktop-ex-100-product/faq#link_19321 . This is the section of the FAQ on using the EX 100 with other USB receivers. The receiver lets select Logitech wireless keyboards and mice communicate with the computer that has this device plugged in. The 810-000755 also works with the Logitech cordless desktop (keyboard/mice) EX 110, and the MK 300. There may be other keyboards and mice that communicate with this receiver. However, newer Logitech keyboards and desktops (keyboard/mice) may not use this receiver.

I hope this helps. Note: the EX 100 uses 2 alkaline AA batteries in the keyboard and 2 alkaline AA batteries in the mouse to communicate with the receiver. I believe the other keyboards and desktops that can communicate with the 810-000755 also use alkaline batteries which last ~6 months before they must be replaced.

Cindy Wells

Aug 21, 2017 | Logitech Computers & Internet

1 Answer

Have cordless keyboard EX-100. Keys will not respond. The calculator and mute keys works all other do not. Have fresh batteries and reset connection button many times. My cordless mouse is okay.


You either need to push fn button (upper left on keyboard) or you need to check that the logitech keyboard software (itouch and a few other names i can;t recal) is running or installed. On mine if the software has glitched out, a quick reload of it and it works fine. This software is what is telling your computer what the special keys mean. If this isn;t running it will only be able to understand the standard type of key signals.

Sep 23, 2010 | Logitech Wireless Access Duo Optical...

1 Answer

The pictures on the f keys..Im pushing them but nothing is happening..for example..f1 is home key..not going to home page when I push it


The function keys that have the pictures on them have dual functions. You need to press and hold down the Fn key and then press the Function key with the symbly/picture to get the 2nd function/option.
Eg. For the Home key press Fn plus F1 key.

Jan 04, 2010 | Logitech Cordless EX 100 Mouse

1 Answer

I cant get my logitech desktop ex 100 keyboard to connect, but the mouse does...anyhelp would be appriciated thanks


we should keep battery in mouse and key board. we get three thing . mouse key bord and usb conneter or usb wire less relay. when we keep it on usb port of computer mouse and key bord auto matic detected we seeon screen ( nepal)

Oct 11, 2009 | Logitech Cordless Desktop Ex100

1 Answer

Unable to connect Logitech cordless keyboard


Of course you know to press the connection button on the receiver then on the keyboard. Since setPoint is recognizing the connection I wonder do the multimedia and function keys work? Do you have the the USB receiver for the KB/Mouse plugged into a hub or KVM switch? If so plug it directly into the back of the PC. See this KB http://logitech-en-amr.custhelp.com/cgi-bin/logitech_en_amr.cfg/php/enduser/std_adp.php?p_faqid=9247

Jun 11, 2009 | Logitech Wave Cordless Desktop

1 Answer

My Logitech EX110 wireless keyboard has no light indicators for CAPS LOCK and NUM LOCK. Should it have those indicators?


Your EX 110 receiver has 3 indicator lights (LEDs) that display the status of the Caps lock, Function key, and the Num lock during normal operating mode. These lights will also flash when the connect button on the receiver is pressed.
LED A: Indicates that the Caps Lock (Capital lock) key is on when lit.
LED F: Indicates that the F keys are in Standard F Keys Mode when lit and in Enhanced F Keys Mode when the LED is off.
  • Your EX 110 keyboard has an Enhanced F Keys Mode for F keys that provides additional functions you can program. See Knowledge Base article 9526.
LED 1: Indicates when the Num Lock (Number lock) key is on. This function allows the number pad to produce only numbers

Mar 27, 2009 | Logitech EX110 SP CORDLESS Keyboard/Mouse

2 Answers

Cap Lock on or off


Your EX 110 receiver has 3 indicator lights (LEDs) that display the status of the Caps lock, Function key, and the Num lock during normal operating mode. These lights will also flash when the connect button on the receiver is pressed.
LED A: Indicates that the Caps Lock (Capital lock) key is on when lit.
LED F: Indicates that the F keys are in Standard F Keys Mode when lit and in Enhanced F Keys Mode when the LED is off.
  • Your EX 110 keyboard has an Enhanced F Keys Mode for F keys that provides additional functions you can program. See Knowledge Base article 9526.
LED 1: Indicates when the Num Lock (Number lock) key is on. This function allows the number pad to produce only numbers

Feb 11, 2009 | Logitech Cordless Desktop EX110

2 Answers

Logitech wireless keyboard and mouse (ex 100) won't connect


The mouse and keyborard have to be in direct view of the reciever. Even a small obstruction will effect the operation

Nov 02, 2008 | Logitech Cordless iTouch Keyboard/Cordless...

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