How To Identify HP Part Numbers

Hewlett-Packard (HP) over the years has acquired many companies such as Digital, Compaq, EMC and others. In the process they have added several formats to their numbering system. Many of the conventions for part numbers are associated to the type of parts such as printer parts or server parts. In addition HP uses different formats for parts that are sold as standalone parts (Batteries, ac adapters, etc ) and internal components such as System Boards, brackets, etc. Also, HP uses different part numbers for sub assemblies or revisions to the same part. In many cases the part number describes the country for which the part has been design such as Keyboards (each language has a code) or the country of origin. New part numbers have also been used to replace non ROHS parts for ROHS complaint parts.

1) General Format

HP Part Number

xxxxxx-xxx

6 Numeric Digits -3 Alphanumeric Digits

2) Retail, Options, OEM, Assembly

The last 3 digits also describe other information such as:
HP Part Number

xxxxxx-001

In this hard drive the “real” part number is 665-1565A and the part number on the manual should be something like 922-xxxx or 661-xxxx.

HP Part Number

xxxxxx-0xx

0xx such as 031 or 051 represent an internal component from an assembly such as the face plate on the optical unit or the optical unit without a face plate.

HP Part Number

xxxxxx-Bxx

B21, B22, B23… they represent options that are intended to be sold as upgrades or end user replaceable parts.

3) Printer parts / Scanner Parts

xxxxxx-xxxN

The “N” at the end of a part number denotes a change on an original part number that will replace a non complaint part number such as in the case of ROHS Complaint Parts or in the case of revisions.

xxxxxx-xxx-RB

“RB” Suffix used to represent refurbished “B” products

xxxx-xxxx

4 numeric digits – 4 numeric digits

xxxxx-xxxxx

5 numeric digits – 5 numeric digits

xxxxxxxxxKC

11 Alphanumeric digits and ends on “KC”

xxxx-xxxxKC

4 Alphanumeric digits – 6 Alphanumeric digits and ends on “KC”

HP Part Number

CxxxxA

Starts with “C”,”D”, etc and 4 numeric digits, ends on “A”, “B” or “AC”, etc

HP Part Number

Cxxxx-xxxxx
CHxxx-xxxxx

Starts with “C”,”D”, etc and 4 numeric digits – 5 numeric digits
Starts with “CH”, “CN”, etc and 3 numeric digits – 5 numeric digits

HP Part Number

xxx-xxxx-xxxCN
xxxxxxx-xxxxxx

3 - 4 - 5 and ends on “CN”
7 Alphanumeric digits – 6 Alphanumeric digits