Download Logitech Unifying Software for Mac | MacUpdate
Logitech USB Dongle Extender - Works with Unifying Receiver
Logitech M510 Wireless Computer Mouse – Comfortable Shape with USB Unifying Receiver with Back/Forward Buttons and Side-to-Side Scrolling Dark Gray 910-001822 | Fast Server Corp. www.srvfast.com
Logitech USB Unifying Receiver Dongle for Mouse & Keyboard 910-005235 (5 Pack) - Walmart.com