Refurbished: Logitech Recertified 920-003070 K400 Wireless Touch Keyboard with Built-In Touchpad for Internet Connected TV's - Newegg.com
Logitech K400 Plus Wireless Keyboard with TouchPad - Atlast! Solutions (reliable powerful fanless PCs)
Logitech K400 Usb Unifying Receiver - Wireless Dongle Receiver Usb Adapter 6 M905 - Aliexpress
Logitech K400 Usb Unifying Receiver - Wireless Dongle Receiver Usb Adapter 6 M905 - Aliexpress
Logitech K400 Plus Tv Wireless Touch Keyboard - Excel Technologies Limited %
Logitech K400 Plus Wireless Touch TV Keyboard With Easy Media Control and Built-in Touchpad, HTPC Keyboard for PC-connected TV, Windows, Android, Chrome OS, Laptop, QWERTY UK English Layout - Black : Amazon.co.uk:
SOLVED: USB for wireless Logitech keyboard lost. - Logitech Harmony Smart Keyboard - iFixit