Amazon.com: BoxWave Keyboard for Lenovo ThinkPad Yoga C640 (Keyboard by BoxWave) - AquaProof USB Keyboard, Washable Waterproof Water Resistant USB Keyboard for Lenovo ThinkPad Yoga C640 - Jet Black : Electronics
HP 14" Pro c640 128GB Multi-Touch Chromebook 190G6UT#ABA
Amazon.com: HP Pro Chromebook Enterprise 14-Inch Laptop c640 - Intel Core i5-1145G7-8 GB RAM - 128 GB SSD NVMe - Chrome OS : Electronics