Logitech's current wireless keyboards and mice run on one of four wireless protocols:
- The proprietary 27 MHz "FastRF" protocol
- A proprietary 2.4 GHz wireless protocol (mostly mice, very few keyboards), I'll label this "2.4 GHz Old"
- The standard 2.4 GHz Bluetooth protocol
- A proprietary 2.4 GHz "Unifying" wireless protocol (not compatible with any of the above)
Logitech wireless keyboards often come in a set with a mouse and a receiver they both use: a dual-channel FastRF receiver, a Bluetooth receiver, a 2.4 GHz Old receiver, or a Unifying receiver.
Logitech wireless mice sold outside of a set come with a single-channel (mouse-only) FastRF receiver, a proprietary 2.4 GHz receiver (either 2.4 GHz Old mouse-only or 2.4 GHz Unifying), or no receiver if they use Bluetooth (the V270 Bluetooth mouse).
You can swap-out the mouse on a FastRF keyboard for another FastRF mouse (using the receiver that came with the keyboard), but you can't swap for a 2.4GHz mouse or use the receiver that comes with any (non-Unifying) mouse to run a keyboard.
- An S510 keyboard comes with an LX5 mouse, which can be switched for a MediaPlay mouse (using the receiver that came with the keyboard)l. The left-over LX5 can be used on another PC with the left-over receiver that came with the MediaPlay.
- The MX Revolution uses the 2.4 GHz Old protocol and its receiver can't see a MX3100 (FastRF) keyboard.
- Similarly, the MX3100's dual-channel FastRF receiver can't see the 2.4 GHz Old MX Revolution.
- You can of course use both receivers in the same system and use the MX Revolution with the MX3100 that way.
Which Devices are Interchangeable
There is an out-dated table in the Logitech Support Database: Matrix of Compatibilities, Channels, and Frequencies for Legacy Logitech Cordless Devices.
27 MHz FastRF mice (interchangeable):
- Cordless Click! mouse
- Cordless Click! Plus mouse (comes with the diNovo Cordless Desktop (FastRF) and several other combos, or sold separately)
- Cordless Mini Optical Mouse
- Cordless Mouse for Notebooks
- Cordless Optical Mouse (not sure of the exact model number)
- LX5 (comes with a keyboard/remote/mouse mini receiver with the S510 Remote and keyboard set, or a keyboard/mouse corded receiver with the S510 non-remote set)
- LX7 Laser (comes with a keyboard/remote mini receiver with the LX710 keyboard set)
- LX7 Optical
- LX8 Cordless Laser Mouse
- MediaPlay (comes with a mouse-only mini receiver)
- MK300 wireless mouse (comes in MK300 keyboard/mouse set)
- MX600 (comes with a keyboard/mouse corded receiver with the MX3000 Laser keyboard set, or a mouse-only mini receiver outside of the set)
- MX700 (note that the receiver that comes with the MX700 mouse isn't supported by the SetPoint driver, but the MX700 mouse on a newer FastRF receiver is supported by SetPoint)
- MX1000 (but it's receiver is inside the charging cradle, so you don't gain much by using it with a keyboard's receiver since you still need the cradle to charge the mouse)
- RX650 Cordless Optical
- V220 Cordless Optical Mouse, first version (note that current revisions of this model use 2.4GHz)
27 MHz non-FastRF trackballs (not interchangeable with above, uses an older protocol):
- Cordless Optical TrackMan
- Cordless TrackMan Wheel
27 MHz FastRF keyboards (interchangeable):
- Access Keyboard?
- Cordless Desktop
- Comfort Laser?
- diNovo Cordless Desktop
- EasyCall Keyboard with receiver in the corded EasyCall Speakerphone
- EX90 Cordless Internet Pro Desktop?
- EX100 Cordless Desktop EX?
- Internet Cordless Desktop (OEM Internet 1500 Laser Cordless Desktop, OEM Internet 350 USB Desktop)?
- LX700/MX3100 (same keyboard)
- Media Keyboard 600?
- Numeric Pad/V250
- S510/S510 Media Remote (tested, this is what I use)
- UltraX Media Desktop?
- Wave Cordless Keyboard?
2.4 GHz Old (non-Bluetooth, non-Unifying) mice and keyboards (not interchangeable with each other very well, and none work with the FastRF, Bluetooth, or Unifying receivers):
- G7 Cordless Laser Mouse
- MX Air
- MX Revolution
- VX Revolution
- VX Nano
- MX610 Left-handed
- V220 current version (including MDN BLU 910-000557)
- Pro 2400 Cordless Desktop keyboard
2.4 GHz Bluetooth mice (interchangeable with each other and can use other Bluetooth receivers):
- Dell BT Travel Mouse by Logitech
- Dell BT/XPS M2010 Mouse by Logitech
- Bluetooth Mouse M555b
- MX1000 Bluetooth (only comes with some of the Bluetooth keyboard sets)
2.4 GHz Bluetooth keyboards:
- Cordless Desktop MX for Bluetooth
- Dell BT keyboard by Logitech
- diNovo Edge
- diNovo Media Desktop (1.0)
- diNovo Media Desktop Laser
- diNovo Mini
2.4 GHz Unifying devices:
- Anywhere Mouse MX
- Performance Mouse MX
- Marathon Mouse M705
- Wireless Mouse M505/B605
- Wireless Keyboard K340
- Wave Keyboard K350
- Number Pad N305/B505