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 60

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.

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. The algorithm that generates the number is designed to provide unique IDs until the year A.D. 3400. No two computers in the world have the same number.

When you replace the system board, you must set the UUID on the new system board as follows:

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

2.From the main menu, select 4. Assign UUID.

A new UUID is created and written. If a valid UUID already exists, it is not overwritten.

ThinkPad T61 and T61p (14.1-inch) 59

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Lenovo T61p manual Retaining serial numbers, Restoring the serial number of the system unit, Retaining the Uuid
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T61, T61p specifications

The Lenovo T61, part of the ThinkPad series, is a notable business laptop that has garnered attention due to its durability, performance, and timeless design. Released in the mid-2000s, the T61 was engineered for professionals who require reliability and functionality on the go.

Key features of the T61 include its robust construction, conforming to military specifications for durability. This makes it resistant to extreme temperatures and shocks, ensuring it can withstand the rigors of everyday business travel. The laptop sports a classic black chassis with the signature ThinkPad styling, including the iconic red TrackPoint, which allows for precise navigation without having to use the touchpad.

In terms of performance, the T61 is equipped with Intel Core 2 Duo processors, offering solid processing power for multitasking and demanding applications. Users can choose from various configurations, with options for up to 4GB of RAM and multiple hard drive capacities, providing flexibility based on individual needs. The inclusion of Intel Graphics Media Accelerator or optional NVIDIA graphics offers decent visual performance, catering to both work and casual multimedia use.

Display options on the T61 are varied, featuring a 14.1 or 15.4-inch screen with a resolution of up to 1680x1050 pixels. Some models support a matte finish that reduces glare, enhancing usability in bright environments – a thoughtful design feature for professionals constantly on the move.

For connectivity, the T61 integrates various ports, including USB 2.0, Ethernet, and modem connections, along with options for Wi-Fi and Bluetooth. This ensures that users can stay connected seamlessly, whether in the office or on the road. Additionally, the laptop supports docking stations, allowing for a more efficient workspace setup by easily connecting multiple peripherals.

Battery life is another notable characteristic of the T61, with options for extended batteries that can provide hours of usage without needing to recharge. This mobility factor is essential for professionals who may be away from power outlets for extended periods.

Security features on the T61 include biometric fingerprint readers and optional TPM (Trusted Platform Module) functionality, emphasizing Lenovo's commitment to data security for business users.

Overall, the Lenovo T61 stands as a testament to Lenovo's dedication to creating reliable and efficient laptops tailored for professionals, balancing performance with practicality and durability. Its features and build quality have left a lasting impression, securing its place as a cherished classic in the realm of business laptops.
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