Hit F2 at power-on to get into the AMI(?) BIOS.
The BIOS identifies the mainboard as D3544-A14. (Datasheets just say D3544-A1) The mainboard reference is included when searching on the Fujitsu support site for the Futro S740.
The BIOS shares, that a TPM 2.0 module exists
The BIOS allows to configure the s740 'headless' via serial - if the additional module is installed (not for mine)
The BIOS allows enabling/disabling of PXE for IPv4 and v6 as well as UEFI level network stack to be present or not