I bought a Logitech MX Ergo Plus trackball mouse at Fry's. This connect via WiFi or Bluetooth. -- Aubrey McIntosh, Ph.D. 1502 Devon Circle Austin TX 78723 (512) 348-7401 -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.inf.ethz.ch/pipermail/oberon/attachments/20180127/97e56306/attachment.html>