Compaq 99875320-5 - Manual (Page 25)

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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