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Amazon.com : Original Replacement USB Receiver for Logitech Wireless Presenter R400 and R800 : Office Products
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Amazon.com: Zotech Replacement USB Receiver (C-U0014) for LogitechWirelessPresenter R400/R700/R800 - Not Compatible with All R400/R700/R800 Models (See Details Before Buying) : Electronics
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Amazon.com : Original Replacement USB Receiver for Logitech Wireless Presenter R400 and R800 : Office Products
Amazon.com: Zotech Replacement USB Receiver (C-U0014) for LogitechWirelessPresenter R400/R700/R800 - Not Compatible with All R400/R700/R800 Models (See Details Before Buying) : Electronics
Logitech Wireless Presenter R400 – University of Hawaii Manoa Library Website
Amazon.com: Zotech Replacement USB Receiver (C-U0014) for LogitechWirelessPresenter R400/R700/R800 - Not Compatible with All R400/R700/R800 Models (See Details Before Buying) : Electronics
Usb Wireless Presenter Pointer R400 | 2.4ghz Wireless Presenter Remote - New 2.4ghz - Aliexpress
Logitech USB Unifying Wireless Receiver (910-005235) - Walmart.com
Logitech R400 presenter pen USB 2.4G Wireless RF Remote control IR PPT Presenter Laser Pointer with Red Laser Retail packaging _ - AliExpress Mobile
Amazon.com : Original Replacement USB Receiver for Logitech Wireless Presenter R400 and R800 : Office Products