This section provides instructions on how to replace the keyboard or mouse.

To replace the keyboard or mouse, do the following:

1.Disconnect the old keyboard cable or mouse cable from the computer.

2.Connect a new keyboard or mouse to one of the USB connectors on the computer. Depending on where you want to connect the new keyboard or mouse, see “Locating connectors, controls, and indicators on the front of your computer” on page 6 or “Locating connectors on the rear of your computer” on page 8.

Figure 41. Connecting the USB keyboard or mouse

What to do next:

•To work with another piece of hardware, go to the appropriate section.

•To complete the installation or replacement, go to “Completing the parts replacement” on page 56.

Completing the parts replacement

After completing the installation or replacement for all parts, you need to reinstall the computer cover and reconnect cables. Depending on the parts you installed or replaced, you might need to confirm the updated information in the Setup Utility program. Refer to Chapter 7 “Using the Setup Utility program” on page 67.

To reinstall the computer cover and reconnect cables to your computer, do the following:

1.Ensure that all components have been reassembled correctly and that no tools or loose screws are left inside your computer. See “Locating components” on page 9 for the locations of various components in your computer.

2.If you have removed the front bezel, reinstall it.

3.Ensure that the cables are routed correctly before reinstalling the computer cover. Keep cables clear of the hinges and sides of the computer chassis to avoid interference with reinstalling the computer cover.

4.Align the cover with the chassis, and then close the cover to engage the cover latch. Use the keys attached at the rear of your computer to lock the keylock that is built into the computer cover.

5.If there is a padlock available, lock the computer cover. See “Locking the computer cover” on page 23.

6.If there is an integrated cable lock available, lock the computer. See “Attaching an integrated cable lock” on page 26.

7.Reconnect the external cables and power cords to the computer. See “Locating connectors on the rear of your computer” on page 8.

8.To update your configuration, refer to Chapter 7 “Using the Setup Utility program” on page 67.

Note: In most areas of the world, Lenovo requires the return of the defective Customer Replaceable Unit (CRU). Information about this will come with the CRU or will come a few days after the CRU arrives.

56ThinkStation User Guide

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Lenovo 4229, 4223, 4228 manual Completing the parts replacement, Connecting the USB keyboard or mouse
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4229, 4223, 4228 specifications

Lenovo has long been recognized for its commitment to producing high-quality computing solutions, and the ThinkPad line is no exception. Among its various models, the Lenovo ThinkPad series 4228, 4223, and 4229 stand out for their robust features and reliable performance, making them ideal choices for business and professional use.

The Lenovo ThinkPad 4228 series is engineered with a focus on durability and performance. One of its key features is the powerful Intel Core processor range, which ensures that users can manage demanding applications and multitask efficiently. Alongside this, the device typically comes equipped with ample RAM, providing speed and responsiveness that enhances productivity.

Moving to the ThinkPad 4223, it streamlines user experience with advanced connectivity options. The inclusion of multiple USB ports, HDMI, and Ethernet capabilities allows for seamless integration with various devices and networks. The 4223 model often houses a backlit keyboard, enabling users to work effortlessly in low-light environments. This model puts a strong emphasis on portability, making it a reliable companion for professionals on the move.

The ThinkPad 4229 takes connectivity a step further by offering options like Wi-Fi 6 and Bluetooth, ensuring fast and stable connections whether in the office or on the go. This model is often equipped with a higher resolution display, contributing to a better viewing experience for video conferencing and presentations. Its extended battery life is a notable feature, allowing users to remain productive without the constant need for recharging.

All three models in the 422x series boast Lenovo’s robust security features, including fingerprint readers and TPM (Trusted Platform Module), which safeguard sensitive data against unauthorized access. Furthermore, the reputation of Lenovo ThinkPads for their exceptional keyboard layout ensures that users can type comfortably over extended periods, reducing strain and increasing efficiency.

In summary, the Lenovo ThinkPad 4228, 4223, and 4229 models represent a blend of power, durability, and user-friendly design. With their focus on connectivity, performance, and security, these laptops cater perfectly to the needs of professionals and businesses, confirming Lenovo's status as a leading manufacturer in the world of computing technology. Whether you need a rugged workhorse for heavy tasks or a portable device for meetings, the ThinkPad series provides versatile solutions to meet any requirement.
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