Rainer Dorsch wrote: > is it possible to run a console on a USB port of a headless server?
Yes and no. The T20 doesn't seem to have iDRAC (IPMI) support, so BIOS/UEFI is not available through a serial console. The first time you have an opportunity for a serial console is in GRUB; then again you have an opportunity for the kernel output; then finally you can have a login on a serial terminal. You will need a USB to RS232 serial adapter, and then an appropriate cable to talk to your terminal device. The other end can also be a USB to RS232 serial adapter. In between you might have a 9 pin serial cable or a specially wired RJ45 (looks like ethernet) cable. The name of the device should be something like /dev/ttyS0 (S1,S2,S3...) or can be /dev/ttyUSB0. USB ports can be renumbered on each boot, but as long as there is only one serial adapter connected, it should always be recognized as /dev/ttyUSB0 -dsr-