dmidecode -t bios

root@pve:~# dmidecode -t bios
# dmidecode 3.4
Getting SMBIOS data from sysfs.
SMBIOS 3.1.1 present.

Handle 0x0000, DMI type 0, 26 bytes
BIOS Information
	Vendor: American Megatrends Inc.
	Version: F5
	Release Date: 06/05/2019
	Address: 0xF0000
	Runtime Size: 64 kB
	ROM Size: 16 MB
	Characteristics:
		PCI is supported
		BIOS is upgradeable
		BIOS shadowing is allowed
		Boot from CD is supported
		Selectable boot is supported
		BIOS ROM is socketed
		EDD is supported
		5.25"/1.2 MB floppy services are supported (int 13h)
		3.5"/720 kB floppy services are supported (int 13h)
		3.5"/2.88 MB floppy services are supported (int 13h)
		Print screen service is supported (int 5h)
		Serial services are supported (int 14h)
		Printer services are supported (int 17h)
		ACPI is supported
		USB legacy is supported
		BIOS boot specification is supported
		Targeted content distribution is supported
		UEFI is supported
	BIOS Revision: 5.13

Handle 0x004F, DMI type 13, 22 bytes
BIOS Language Information
	Language Description Format: Long
	Installable Languages: 15
		en|US|iso8859-1
		zh|TW|unicode
		zh|CN|unicode
		ru|RU|iso8859-5
		de|DE|iso8859-1
		ja|JP|unicode
		ko|KR|unicode
		es|ES|iso8859-1
		fr|FR|iso8859-1
		it|IT|iso8859-1
		pt|PT|iso8859-1
		vi|VI|iso8859-1
		id|ID|iso8859-1
		tr|TR|iso8859-1
		pl|PL|iso8859-1
	Currently Installed Language: en|US|iso8859-1