Found an Acer EasyStore H340 for €25, upgraded it to a newer motherboard and patched all proprietary motherboard connections: Cheap homelab! : r/homelab
Acer H340 VGA Cable 製作分享- Mobile01
LAN/VGA Combo Port Cable for Acer Notebook Aspire V5 431 471 531 571 571P| cable set|cable spiralcabl - AliExpress
HiCuCo VGA Adaptor / VGA Connection Cable R for Acer Aspire easyStore H340, H341 and H342, Lenovo ideacentre D400: Amazon.de: Computer & Accessories