If you are asking a question like this my advice would be to install it and hope no adjustments in BIOS are needed and the added ran just runs. 'Updating' the BIOS means to flash to a newer version of BIOS. 'Adjusting' the RAM in BIOS would basically be setting the RAM's speed, timings and voltage to Mfg. specifications in BIOS. Adding more DIMMs may require more voltage which your BIOS may or may not allow.