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 LENOVO ThinkPad Hardware Maintenance Diskette Version 1.76 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.

Reading or writing the ECA information

Information on Engineering Change Announcements (ECA) are stored in the EEPROM of the system board. The electronic storage of this information simplifies the procedure to check if the ECA has been previously applied to a machine. The machine does not need to be disassembled to check for the ECA application.

To check what ECAs have been previously applied to the machine, use the ECA Information Read/Write function on the LENOVO ThinkPad Hardware Maintenance Diskette Version 1.76 or later.

1.Insert the LENOVO ThinkPad Hardware Maintenance Diskette Version 1.76 or later, and restart the computer.

2.From the main menu, select 6. Set ECA Information.

3.To read ECA information, select 2. Read ECA/rework number from EEPROM and follow the instruction.

4.To read box build date, select 5. Read box build date from EEPROM, and follow the instruction on the screen.

After an ECA has been applied to the machine, the EEPROM must be updated to reflect the ECA’s application. Use the LENOVO ThinkPad Hardware Maintenance Diskette Version 1.76 or later to update the EEPROM.

Note: Only the ECA number is stored in the EEPROM. The machine type of the ECA is assumed be the same as the machine type of the machine that had the ECA applied to it.

1.Insert the LENOVO ThinkPad Hardware Maintenance Diskette Version 1.76 or later, and restart the computer.

2.From the main menu, select 6. Set ECA Information.

3.To write ECA information, select 1. Write ECA/rework number from EEPROM, and follow the instruction.

4.To write box build date, select 4. Write box build date from EEPROM, and follow the instruction on the screen.

If the system board is being replaced, try to read the ECA information from the old system board and transfer the information to the new system. If the system board is inoperable, this will not be possible.

FRU replacement notices 67

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Lenovo X100E, 350828U manual Reading or writing the ECA information
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X100E, 350828U specifications

The Lenovo 350828U, also known as the ThinkPad X100E, represents an intriguing blend of performance, portability, and durability in the world of business laptops. Designed primarily for mobile professionals and students, the X100E is lightweight and compact, making it highly portable without sacrificing functionality.

One of the main features of the Lenovo X100E is its robust design. Built to meet military specifications for toughness, it can withstand a range of environmental conditions, including vibrations, low temperatures, and dusty environments. This ruggedness is paired with an ergonomic keyboard, which is a staple in Lenovo’s ThinkPad line. The keyboard is spill-resistant and engineered to provide a comfortable typing experience, crucial for long work sessions.

In terms of display, the X100E boasts an 11.6-inch LED backlit screen with a resolution of 1366x768 pixels. This compact size, combined with a bright display, ensures clarity and visibility in various lighting conditions. The screen is designed to minimize glare, further enhancing usability during outdoor or bright environments.

Under the hood, the Lenovo 350828U features options of AMD processors, providing a balance of efficiency and performance for everyday computing tasks like web browsing, document editing, and multimedia consumption. The integration of AMD graphics is particularly beneficial for those needing to handle light graphical applications or video playback seamlessly.

Connectivity options include USB 2.0 and 3.0 ports, HDMI, VGA, and an Ethernet port, along with a built-in webcam for video conferencing. The presence of Wi-Fi and Bluetooth ensures that users stay connected wirelessly, allowing for convenient access to network resources and peripherals.

Battery life is another critical aspect of the X100E, often lasting up to six hours on a single charge, making it suitable for users who need to work on the go without worrying about frequent recharging.

Additionally, the laptop supports various operating systems, with Windows being the primary choice, providing software versatility across different business environments.

In summary, the Lenovo 350828U, X100E, combines portability, durability, and performance in a compact form factor, making it a smart choice for professionals seeking a reliable mobile computing solution. With its solid build quality, impressive battery life, and comprehensive connectivity options, the ThinkPad X100E effectively meets the diverse needs of its users.
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