Compaq 99875320-5 Manual De Usuario
Section 4. USB Communications
SERIAL_NUM PROPERTY
Property ID:
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.
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.
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
17