Issue / Question
How to decode ET50 ET55 tablet serial number to manufactured date?
Resolution / Answer
Year Identifier (3rd digit):
A single character which is used to identify the year a serialized item is manufactured.
Week Identifier (4th and 5th digit):
A two-character numeric code (01 thru 52) which is used to identify the week the serialized item is manufactured.
Week “01” is the first full week in January, and Week “52” is the last week in December.