3.Lay the server on its side for easier operation.

4.Locate the Clear CMOS /Recovery jumper on the system board and then move the jumper from the default normal position (pin 1 and pin 2) to the short-circuited position (pin 2 and pin 3).

5.Wait more than 10 seconds and then move the Clear CMOS /Recovery jumper back to the normal position (pin 1 and pin 2).

6.Reinstall the server cover and connect the power cord(s). See “Completing the parts replacement” on page 162.

7.Wait about 30 seconds. Then, turn on the server. The BIOS passwords are erased and the BIOS recovers to the factory default settings.

2

BMC setting jumper

When the BMC setting jumper is in the default normal position (pin 1 and pin 2), the server needs about 30 seconds for the BMC to initialize whenever you connect the server to an ac power source. If you press the power switch on the front panel during this period, the server will not start immediately; it will start after the BMC initialization finishes.

If you move the BMC setting jumper to pin 2 and pin 3, the server will be directly turned on when you press the power switch without waiting for the BMC ready. The BMC function might not be available in this situation.

3

BIOS recovery jumper

Set the jumper and boot the server from a BIOS recovery image in order to recover your BIOS settings.

To recover the BIOS, see “Recovering from a BIOS update failure” on page 68.

4

Clear password jumper

Used to erase forgotten passwords, such as an administrator password and a user password.

To clear passwords, do the following:

1.Remove all media from the drives and turn off all attached devices and the server. Then, disconnect all power cords from electrical outlets and disconnect all cables that are connected to the server.

2.Remove the server cover. See “Removing the server cover” on page 85.

3.Lay the server on its side for easier operation.

4.Locate the Clear password jumper on the system board and then move the jumper from the default normal position (pin 1 and pin 2) to the short-circuited position (pin 2 and pin 3).

5.Wait more than 10 seconds and then move the Clear password jumper back to the normal position (pin 1 and pin 2).

6.Reinstall the server cover and connect the power cord(s). See “Completing the parts replacement” on page 162.

7.Wait about 30 seconds. Then, turn on the server. The BIOS passwords are erased, including the administrator password and user password.

8.To set new passwords, see “Using passwords” on page 65.

5

Manufacturing jumper

Reserved for the manufacturer.

Chapter 3. Product overview 49

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Lenovo 441, 387, 393, 391, 389, 388, 390 BMC setting jumper, Bios recovery jumper, Clear password jumper, Manufacturing jumper
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392, 390, 441, 388, 389 specifications

Lenovo has established itself as a leader in the tech industry, particularly in the realm of laptops and PCs. Among its impressive lineup, the Lenovo series 387, 390, 393, 391, and 392 stands out for their innovative features, robust performance, and user-centric designs. These models cater to a range of users, from casual users to professionals who require high performance and reliability.

The Lenovo 387 is designed with versatility in mind. It comes equipped with an Intel Core processor that delivers snappy performance suitable for everyday tasks and even some heavy lifting with multimedia applications. The display features vibrant colors, making it perfect for streaming media or working on graphic design. Additionally, the 387 incorporates Lenovo’s advanced thermal management technology that ensures efficient cooling, preventing the device from overheating during intensive tasks.

Moving on to the Lenovo 390, this model emphasizes portability without compromising power. Weighing significantly less than its counterparts, the 390 is ideal for users who are always on the go. Its long-lasting battery life means users can stay productive throughout the day without searching for a power outlet. The 390 also features a high-resolution touchscreen, enhancing user interaction and providing a modern computing experience.

The Lenovo 393 further amplifies productivity features with its emphasis on connectivity. It comes with multiple USB ports, an HDMI output, and cutting-edge Wi-Fi technology for seamless networking. This model also boasts Lenovo's proprietary software, which simplifies file sharing and enhances collaboration, making it a strong choice for team-oriented projects.

For users interested in superior graphics and gaming performance, the Lenovo 391 is equipped with a dedicated GPU. This feature allows it to handle the latest games and graphic-intensive applications seamlessly. With an expansive display and high refresh rate, users can enjoy an immersive visual experience. Moreover, its customizable RGB backlit keyboard adds a touch of personalization.

Finally, the Lenovo 392 represents the pinnacle of balance between high-end features and affordability. It integrates smart AI capabilities that optimize device performance based on user habits, ensuring that it runs at optimal capacity. The 392 also prioritizes security with biometric login options and integrated privacy features, making it a trustworthy choice for sensitive tasks.

In summary, Lenovo's 387, 390, 393, 391, and 392 models showcase the brand's commitment to innovation, performance, and user satisfaction. Each model targets specific needs, ensuring that there is a suitable option for every type of user, from students to professionals and gamers. With advanced technologies and thoughtful designs, Lenovo continues to set the standard in the competitive laptop market.
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