Fellow C720 owner here. Love the thing, have had it running Elementary on a new SSD for ages now. Have recently switched to a E111 (despite only 32GB EMMC) because I got it to take 8GB RAM: https://taoofmac.com/space/com/Acer/Aspire%20ES1-111M, but otherwise the experience is still largely the same: extremely lightweight, quiet, "disposable" laptop tha I can use to code anything, browse anything, fiddle with the electronics (this one has pads for a SATA connector... haven't traced the electronics yet to see if they are there at all...)