SATA IDE connectors (3) Front panel connector Serial (com2) connector Front USB connectors (2) Front audio connector

PCI Express X 1 adapter connectors (3) PCI Express X 16 adapter connector System fan connector

12V power connector

Replacing hardware

Attention: Do not remove the computer cover or attempt any repair before reading the “Important safety information” in the Safety and Warranty Guide that was included with your computer or in the Hardware Maintenance Manual (HMM) for the computer. To obtain copies of the Safety and Warranty Guide or HMM, go to the Support Web site at http://support.lenovo.com

Note: Use only parts provided by Lenovo.

Removing the computer cover

Attention: Turn off the computer and wait three to five minutes to let it cool down before removing the cover.

To remove the computer cover:

1.Remove any media (disks, CDs, or memory cards) from the drives, shut down the operating system, and turn off the computer and all attached devices.

2.Unplug all power cords from electrical outlets.

3.Disconnect all cables attached to the computer. This includes power cords, input/output (I/O) cables, and any other cables that are connected to the computer. Refer to “Locating connectors on the rear of the computer”.

4.Remove the two screws that secure the computer cover at the rear of the chassis.

34User Guide

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Lenovo B540, 3099, 57312709, 57RF0010, 57312430 Replacing hardware, Removing the computer cover, To remove the computer cover
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1196, 1194, 10080, 3099, 10091 specifications

Lenovo has established a reputation for crafting reliable and high-performing devices tailored for both personal and professional use. Among its diverse portfolio, the Lenovo 57312709, 2558, 57RF0010, 57312430, and B540 models stand out for their innovative features and solid performance.

The Lenovo 57312709 model is designed primarily for business professionals. Its robust build quality ensures durability, making it ideal for users who are frequently on the move. This laptop boasts a sunlit-readable display, combined with anti-glare technology to enhance visibility in various lighting conditions. Powered by cutting-edge processors, it delivers efficient multitasking while optimizing energy consumption.

Next, the Lenovo 2558 model is renowned for its versatility. It combines a sleek design with commendable performance. The device is equipped with a high-resolution screen that produces vivid colors and sharp images, which is perfect for multimedia consumption. Its enhanced audio system provides immersive sound quality, making it suitable for entertainment purposes as well as professional presentations.

The Lenovo 57RF0010 is actionable in terms of connectivity, featuring multiple USB ports, HDMI support, and wireless capabilities that keep users connected to networks and peripherals seamlessly. This model supports fast data transfer technology, further simplifying tasks such as file sharing and backups.

Meanwhile, the Lenovo 57312430 caters to gamers and heavy software users. It is equipped with a dedicated GPU that amplifies graphical performance, allowing for smooth gameplay and efficient running of resource-intensive applications. Its cooling system is optimized to prevent overheating during extended usage, preserving both performance and longevity.

Lastly, the Lenovo B540, a hybrid laptop model, blends the functionality of a traditional laptop with the convenience of a touchscreen tablet. Its 360-degree hinge allows users to configure the device into various modes, providing flexibility for different use cases, whether for work, study, or leisure. The B540 also incorporates stylus support, enhancing creativity and productivity for art and design tasks.

Together, these Lenovo models reflect the company's commitment to innovation, user-centric design, and advanced technology. With a focus on performance, versatility, and practicality, they cater to a wide range of needs, from business to gaming and beyond, making Lenovo a trusted choice in today’s tech landscape.
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