1620 with 1600 bootcode! Is it normal?

CD, DVD and (Ultra HD) Blu-ray Writers BenQ / Philips Writer
#1

Hi guys,

my 1620 B7V9 has a 1600 bootcode ! Is it normal?

I saw it with MCSE.
Thanks and sorry if it has been already asked.

#2

I got my answer using the search function, Thanks