[スペック・情報・価格】HP Elite c640 G3 Chromebook – ChromeOSはもっと進化できるのか？
https://laptopmedia.com/jp/highlights/specs-info-and-prices-hp-elite-c640-g3-chromebook-can-chromeos-become-more/
HPが新しいChromebook ｢Elite c645 G2｣と｢Elite c640 G3｣を海外で発表
https://www.helentech.net/news-23426/