Huawei E9000 Troubleshooting Manual page 136

Huawei Servers
Troubleshooting
●
Issue 20 (2020-09-25)
No.
6
7
If the first two digits are 21, see
NO TE
A product SN starts with SN or ESN. The following is an example.
Figure 8-2 ESN example
No.
1
2
3
4
5
6
7
Copyright © Huawei Technologies Co., Ltd.
Description
RoHS compliance (one character). Y indicates
environmental-friendly processing.
Internal model, that is, product name.
Figure 8-2.
Description
SN ID (two characters), which is 21.
Material identification code (eight digits), that is,
processing code.
Vendor code (two characters). The value 10 indicates
Huawei and other values indicate outsourcing
vendors.
Year and month (two characters).
● The first character indicates the year. The digits 1
to 9 indicate 2001 to 2009, the letters A to H
indicate 2010 to 2017, the letters J to N indicate
2018 to 2022, and the letters P to Y indicate 2023
to 2032.
NOTE
The years from 2010 are represented by upper-case letters
excluding I, O, and Z because the three letters are similar to
the digits 1, 0, and 2.
The second character indicates the month. Digits 1 to
9 indicate January to September, and letters A to C
indicate October to December.
Sequence number (six characters).
RoHS compliance (one character). Y indicates
environmental-friendly processing.
Internal model, that is, product name.
8 Common Operations
127