Logitech K585 Lost USB Dongle – What to do about it?

Logitech’s K585 keyboard is a popular ergonomic keyboard with an amazing two year battery life.

Logitech K585 Multi-Device Slim Wireless Keyboard, Built-in Cradle for Device; for Laptop, Tablet, Desktop, Smartphone, Win/Mac, Bluetooth/Receiver, Compact, Easy Switch, 24 Month Battery - Graphite

It connects to a laptop or PC over a wireless 2.4 GHz link. A USB dongle plugs into a laptop or PC and is used to establish this link. This is a small receiver that’s easy to misplace or lose.

What if you lose the dongle for the K585 Keyboard?

You might think the keyboard is useless now. However that’s not the case. The dongle can be replaced. You just have to get the correct one.

The K585 will work with a Unifying receiver and the lost dongle can be replaced with a Unifying receiver dongle. It looks different from other small dongles as it has an orange marking on it.

Logitech Unifying Receiver, 2.4 GHz Wireless Technology, USB Plug Compatible with all Logitech Unifying Devices like Wireless Mouse and Keyboard, PC / Mac / Laptop - Black

K585 keyboards are part of the Unifying family of products and that’s an advantage for many reasons. Replacement unifying receivers are readily available and it’s a breeze to connect multiple Logitech products simultaneously that are compliant with this ecosystem.

Logitech Receiver Connects up to 6 devices

Here is the Unifying Software download page. You will have to configure the new dongle and connect the keyboard and mouse to it.


In this post we have recommended a solution in the event that you lost the USB dongle receiver for your K585 Keyboard. You will need to purchase a replacement Unifying Receiver.

Logitech MK295 Wireless Mouse & Keyboard Combo with SilentTouch Technology, Full Numpad, Advanced Optical Tracking, Lag-Free Wireless, 90% Less Noise - Graphite