The 4th, 5th and 6th characters will always be numbers.
The 4th character will be the year of manufacture.
If you have a 430 G1, the 4th character should be a 3 or 4, depending on what year it was made (2013 or 2014).
The 5th and 6th characters are the calendar week during the year of manufacture and would range from 01 - 52.
Be alert for scammers posting fake support phone numbers and/or email addresses on the community. If you think you have received a fake HP Support message, please report it to us by clicking on "Flag Post".