Compaq 99875320-5 manual Serialnum Property, Cmd Num Data Len Prp ID Prp Value 31 32

Section 4. USB Communications

SERIAL_NUM PROPERTY

Property ID:	0x01
Property Type:	String
Length:	0 – 15 bytes
Get Property:	Yes
Set Property:	Yes
Default Value:	The default value is no string with a length of zero.
Description:	The value is an ASCII string that represents the device’s serial number. This
	string can be 0 – 15 bytes long. The value of this property, if any, will be sent
	to the host when the host requests the USB string descriptor.
	This property is stored in non-volatile memory, so it will persist when the unit
	is power cycled. When this property is changed, the unit must be reset (see
	Command Number 2) or power cycled to have these changes take effect.

Example Set Serial Num property Request (Hex):

Cmd Num	Data Len	Prp ID	Prp Value
01	04	01	31 32 33

Example Set Serial Num property Response (Hex):

Result Code	Data Len	Data
00	00

Example Get Serial Num property Request (Hex):

Cmd Num	Data Len	Prp ID
00	01	01

Example Get Serial Num property Response (Hex):

Result Code	Data Len	Prp Value
00	03	31 32 33

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