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The Harmony Smart Hub and Smart Keyboard, released March 2014, supports three activities and can control up to 8 devices. This comes with a built-in track pad and Harmony-specific USB receivers, but lacks a display screen.

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USB for wireless Logitech keyboard lost.

I lost the USB for my logitech wireless keyboard. Now it does not even turn on. Batteries are ok so i guess it is the Usb that creates the problem of it not working.

I guess I did not find an answer because all solutions proposed were not including the fact of 3 different brands involved in my case. that is:

LOGITECH WIRELESS (not turning on) KEYBOARD

TOSHIBA P.C

MICROSOFT MOUSE PAD.

The replies that were proposing buying a unified USB were not very relevant ,i think.

Or i did not get them...

please help because i am not so good (if at all with computers...as you have understood from my question..i guess..!)

Thank you very much in advance computer wizards for solving my problem!

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There are many different types of keyboards. This link shows you how to solve the problem in general: https://www.onesdr.com/lost-usb-dongle-f...

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Hi, so you are a bit confused. I get why.

Look on the bottom of your logitech keyboard.

See if you find this orange logo.

Block Image

If you do find this orange logo, that means it supports what Logitech calls "Unifying Technology" where it easily pairs to the pictured receiver.

You can purchase one from here:

https://www.ebay.com/itm/Logitech-Unifyi...

Once you purchase this USB receiver, you also need to download the pairing software.

http://support.logitech.com/en_us/softwa...

Install the software, then plug in the USB receiver.

Run the software and follow the instructions.

It will tell you to add a device, and set the receiver into pairing mode.

To pair, simply switch off and on the keyboard.

Now if you don't have a power switch on the keyboard, you already know that this is not a supported keyboard. List the model number of your keyboard, not the name of it if these instructions don't work.

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Thank you so much! I did find the orange logo so i will follow the steps you recommended and hopefully i will get back to report successful results!

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Switching my keyboard on and off is not triggering the pairing to happen. Is there some button you have to hold down or something? Since the keyboard works with 2 USB receivers it has to have some way of binding the two different USB receivers to mark them as 1 or 2.

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Thank you, it worked great!

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My keyboard doesn't have the orange logo. It's Logitech ....The model number is mk320.

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K350 is the model number of the Logitech keyboard

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logitech mk345, i lost my nano usb receiver and doesn't support unifying usb receiver, so, please help me, where to buy which is compatible with my devixe

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Out of stock

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I have a K270 mouse and keyboard than I lost the usb for. Using the usb from K400+ but not working. Any idea please? Many thanks

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I did upgrade to BigSur OS11....

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I have lost my USB Logitech MK240 Wireless Keyboard and Mouse  that enables to

use the set on my laptop….but it works grate on my smart TV.

Can i down load an app where it will work without the USB as it does on my smart TV

SZ

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I imagine the TV is picking up the Bluetooth signal

Most PCs will not but, you open Bluetooth on Laptop and see if it shows available to Sync

If not Amazon, Target and eBay have them for sale

https://www.bing.com/shop?q=Receiver+USB...

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i would like to connect m331 mouse to the keyboard k400+ receiver. i tried using the unifying software, but it is unable to detect the k440+ supplied receiver although it has the unifying logo.

can please guide me how?

thank you

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It is not possible to 'Connect the M331 to the K400+'

You should be able to Connect both to the pc/computer the 'Unifying USB Receiver' is plugged into; make certain both have 'Fresh' batteries.

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Do you have M331 silent plus mouse? If yes, this mouse is not Unifying supported. See specs: https://www.logitech.com/en-my/products/... Nano receiver. K400+is supporting by Unifying technology: https://www.logitech.com/en-us/products/...

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Download: Connect Utility Software: Logitech Connection Utility – Logitech Support + Download

How to Pair Logitech Mouse/Keyboard with a Different "Non-Unifying Receiver"

(272) How to Pair Logitech Mouse/Keyboard with a Different "Non-Unifying Receiver" - YouTube

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Nano receivers use same connection utility as well. Not different. Other than lightening, lightspeed, nano, there is a new set of bolt receivers as well.

Under windows:

Lightening, nano - Logitech connection utility

Lightspeed - Logitech G Hub

Bolt - Bolt connection utility

Under Linux:

Solaar

[2nd one would be updated later]

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Aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa

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I lost my USB receiver also

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I lost my USB of flipkart smartbuy wireless keyboard and mouse

What can I do now

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I lost my usb receiver for K400+ if it is available then how can I purchase the same and if not available what could be the best solutions.

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Hi,I have a Logitech K235 and doesn't have on/off switch and dont have a nano USB

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Hi

I have a MK320 Keyboard and i lost its nano receiver. I tried using the unifying receiver and it is not compatible. Please let me know how to find a receiver for this. Also please let me know if there is a combo mouse for it such that i can buy that and reprogram the keyboard with that nano receiver that comes with the mouse.

Appreciate your response on this.

Thanks.

Jack

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I have a K330 Keyboard and an M317 Mouse with no Nano USB Receiver

Is there a cross reference chart for compatible USB Receivers by Logitech device?

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Dennis in Tech Support helped me pair the M317 with Unifying Receiver but I need to purchase a Nano Receiver' for the K330

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Hi where did you buy the nano receiver please?

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You can buy nano receiver from AliExpress or eBay. In Germany, I seem to randomly find a eBay ad selling both unifying and nano receivers. When I saw I just bought 5x each. €3 per reciever. I have redistributed to my friends as everyone had the same issue. Just ask the sellers. Nano receivers use chip made by Ti-Texas instruments. Unifying and lightspeed use NRF chip. For unifying and lightspeed the difference is only firmware and I have no idea how to reprogram. Ti chips use similar firmware but there are slight differences. Now the prices seem to have increased in 6 months. Around €8 per reciever. Most ads are unifying. For my broken g305, I couldn't get a dongle available so took friend's help and swapped chips with nano dongle. Only g305 has the Ti chip. Rest all lightspeed dongles GPW, g403, g703, g603, g900, g903 have NRF chip. G613 has Ti chip. Haven't got hands on g913 and gPro keyboards. This information might be useful for someone looking for specific dongle.

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The K270 is a UNIFYING Logitech device so you may buy a Unifying USB Receiver online and both the Keyboard and mouse will work once you load the Unifying application

The K400 Plus is Also Unifying so, you may need the APP to connect it as well.

Search Logitech Unifying Software - Free download

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There is two version of K270 one that supports unifying and another that doesn't.

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@goeranolofsson other version is nano receiver. Unifying is NRF chip and Nano is Ti chip.

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