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.

General information

Pre-disassembly instructions

Before proceeding with the disassembly procedure, make sure that you do the following:

1.Turn off the power to the system and all peripherals.

2.Unplug all power and signal cables from the computer.

3.Place the system on a flat, stable surface.

Removing the computer cover

Attention: Turn off the computer and wait 3 to 5 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 your 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 2 screws that secure the computer cover at the rear of the chassis.

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Lenovo H520S, H505S Replacing hardware, General information, Removing the computer cover, Pre-disassembly instructions
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57312710, 31502552, 3230, 2561, 57311365 specifications

The Lenovo H520S is a compact desktop PC designed to cater to both home and office environments. It combines sleek design with robust performance, making it an excellent choice for users seeking versatility in a desktop system. One of the standout features of the H520S is its powerful computing capabilities, driven by Intel's third-generation Core processor family. This ensures that tasks ranging from everyday browsing to demanding applications run smoothly and efficiently.

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