Retaining serial numbers

This section includes the following descriptions:

v“Restoring the serial number of the system unit”

v“Retaining the UUID”

v“Reading or writing the ECA information” on page 81

Restoring the serial number of the system unit

When the computer was manufactured, the EEPROM on the system board was loaded with the serial numbers of the system and all major components. These numbers need to remain the same throughout the life of the computer.

If you replace the system board, you must restore the serial number of the system unit to its original value.

Before replacing the system board, save the original serial number by doing the following:

1.Install the ThinkPad Hardware Maintenance Diskette Version 1.73 or later, and restart the computer.

2.From the main menu, select 1. Set System Identification.

3.Select 2. Read S/N data from EEPROM.

The serial number of each device in your computer is displayed; the serial number of the system unit is listed as follows:

v20: Serial number Write down that number.

Note: The serial number of the system unit is also written on the label attached to the bottom of the computer.

After you have replaced the system board, restore the serial number by doing the following:

1.Install the ThinkPad Hardware Maintenance Diskette Version 1.73 or later and restart the computer.

2.From the main menu, select 1. Set System Identification.

3.Select 1. Add S/N data from EEPROM. Follow the instructions on the screen.

If the MTM and Product ID numbers differ from each other on the rear label, use what is shown for the Product ID field. See example below:

MTM on rear label:

TTTT-CTO S/N SSSSSSS

Product ID on rear label:

TTTT-MMM (Use this number when setting Serial Number)

In the example, the Serial Number to be input is ’1STTTTMMMSSSSSSS’.

Retaining the UUID

The Universally Unique Identifier (UUID) is a 128-bit number uniquely assigned to your computer at production and stored in the EEPROM of your system board.

80ThinkPad X200 Tablet and X201 Tablet Hardware Maintenance Manual

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Lenovo X200, X201 manual Retaining serial numbers, Restoring the serial number of the system unit, Retaining the Uuid
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X201, X200 specifications

The Lenovo X200, part of Lenovo's ThinkPad series, was introduced as a lightweight and portable laptop designed for professionals and business users. This model offers a blend of performance, durability, and advanced features, making it a popular choice for those who prioritize mobility and reliability in their work.

One of the standout characteristics of the X200 is its compact design. Weighing in at around 3.5 pounds and featuring a 12.1-inch display, this laptop is exceptionally portable. Its robust chassis is made from high-quality materials, intended to withstand everyday wear and tear while meeting military specifications for durability. The spill-resistant keyboard is another valuable feature, ensuring that accidental spills do not compromise the device’s functionality.

The X200 is powered by Intel’s Core 2 Duo processor, which provides ample performance for multitasking and handling demanding applications. The laptop supports up to 8GB of RAM, enhancing its ability to run multiple applications concurrently without lag. The inclusion of solid-state drives (SSDs) offers faster data access speeds and contributes to improved overall system responsiveness, further enhancing the user experience.

Display quality is another strong point for the X200. The laptop features an LED-backlit display that provides excellent brightness and color accuracy, making it suitable for presentations and media consumption. The screen resolution, typically at 1280 x 800 pixels, ensures that images and text are crisp and clear, catering to both work and entertainment needs.

Connectivity options on the X200 are extensive, featuring multiple USB ports, a VGA port for external displays, and an ExpressCard slot for additional functionality. For those who require internet connectivity, the laptop supports both Ethernet and Wi-Fi, with options for integrated 3G capabilities, allowing users to stay connected on the go.

Lenovo’s ThinkVantage technologies enhance the X200 experience, offering features such as system updates, security management, and backup solutions. The laptop also boasts a long battery life, making it ideal for users who need to work away from power outlets for extended periods.

In conclusion, the Lenovo X200 is a well-rounded laptop that combines portability, performance, and a suite of features tailored for business users. Its durability, coupled with Lenovo's commitment to quality engineering, makes it a reliable choice for professionals looking for an efficient and capable device.
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