Amazon.com: Logitech C-U0007 Unifying Receiver for Mouse and Keyboard Works with Any Logitech Product That Display The Unifying Logo (Orange Star, Connects up to 6 Devices) (C-U0007) : Electronics
Amazon.com: Logitech USB Unifying Receiver - 2 Pack For Personal Computer : Electronics
Logi Bolt USB Receiver for Multi-Computer / Device Use
Amazon.com: USB Receiver for Logitech G703 for Lightspeed Mouse, 2.4 GHz Wireless Mouse Receiver Adapter Replacement, Gaming Mouse Unifying Receiver, Fro Gaming Mice : Video Games