Ricoh D129 Service Manual page 343

Main SP Tables-5
Device Release No.
Sets the device release number of the BCD (binary coded decimal) display.
004
[0000 to 9999 / 100 / 1] (DFU)
Enter as a decimal number. NCS converts the number to hexadecimal
number recognized as the BCD.
005 Fixed USB Port
This SP standardizes for common use the model name and serial number
for USB PnP (Plug & Play). It determines whether the driver requires
re-installation.
[0 to 2 / 0 / 1]
0: OFF
1: Level 1
2: Level 2
006 PnP Model Name
This SP sets the model name to be used by the USB PnP when "Function
Enable (Level 2) is set so the USB Serial No. can have a common name
(SP5844-5).
Default: Laser Printer (up to 20 characters allowed).
007 PnP Serial Number
This SP sets the serial number to be used by the USB PnP when "Function
Enable (Level 2)
set so the USB Serial No. can have a common name (SP5844-5).
Default: None (up to 12 characters allowed for entry).

Make sure that this entry is the same as the serial number in use.

At initialization the serial number generated from the model name is
used, not the setting of this SP code.

At times other than initialization, the value set for this SP code is used.
D129/D130 5-84 SM