IBM 704 - Manual (Page 297)

Appendix A. Server Records
Record the Identification Numbers
Record and retain the following information.
Table 7. PC Server 704 Identification Numbers
The server identification numbers appear on a label on the rear of
the server.
Two keys are provided with your server. Store the keys in a safe
place. If you lose the keys, you must order a replacement lock
mechanism and keys from IBM.
Note: Anyone who has access to the key serial number and
manufacturer address can order duplicate keys, so store the
tag in a safe place.
Product Name IBM PC Server 704
Machine Type
Model
with preinstalled hard disk drive
without preinstalled hard disk drive
Serial Number
Key Serial Number
 Copyright IBM Corp. 1996 279