COMPEX USB HUB DAUGHTER BOARD for WPJ344/558, 2*USB 2.0 + USB miniPCIe
Ryan Whitwam on Twitter: "I love the daughterboard for this keyboard. It tucks away in a little cubby at the bottom of the case. It's USB-C to connect the keyboard, and there's
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Amazon.com: Lenboes USB Power Board Daughter IO Board with Cable Replacement for Lenovo Chromebook 11 500E 2nd Gen 81MC 300E Gen 2 81MB 5C50T70714 : Electronics