SIIG Wireless-N Mini USB Wi-Fi Adapter - network adapter - USB 2.0 - JU-WR0112-S2 - Wireless Adapters - CDW.com
Connect USB Devices Wirelessly — Definitive How-to Guide
Amazon.com: 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 : Electronics