Fedus Mini Wireless Portable Wireless Keyboard with USB Receiver Wireless Multi-device Keyboard - Fedus : Flipkart.com
USB dongle receiver for PERIBOARD-612-White – Perixx USA
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
Logitech Unifying Receiver Wireless USB Dongle PC Mouse keyboard 993-000439 OEM | eBay