Design
Component for	Laptop
Compatible products	ThinkPad
Internal
Network
Mobile network generation	4G
Operational conditions
Operating temperature (T-T)	-25 - 75 °C
Storage temperature (T-T)	-40 - 90 °C
Other features
Type	WWAN Card
Packaging data
Package width	53 mm
Package depth	144 mm
Package height	177 mm
Package weight	30 g
Ports & interfaces
Connectivity technology	Wireless
Host interface	M.2
Interface	WWAN
USB ports quantity	1
USB version	2.0/3.2 Gen 1 (3.1 Gen 1)
System requirements
Windows operating systems supported	Windows 10
Technical details
Warranty period	1 year(s)
Weight & dimensions
Width	42 mm
Depth	30 mm
Height	2.3 mm
Weight	6.8 g

The Lenovo 4XC1R04815 is a WWAN card in M.2 format, designed as an integrated network component for ThinkPad laptops. It enables wireless data transmission via mobile networks and is specifically designed for use in mobile work environments where a stable internet connection is required independent of fixed network infrastructures. The card is based on 4G technology and supports LTE-Advanced category 16, enabling a maximum downlink speed of 1.0 Gbps and an uplink speed of 150 Mbps. The host interface is designed for M.2, ensuring a compact and standardized integration into modern laptops.

Applications
The card is primarily intended for ThinkPad models, particularly the P14s Gen 5 AMD series, but also compatible with other models such as T14 G5, L14 G5, X13 2in1 G5, and X12 G2. It serves as a mobile internet connection for professional users who need to access email, cloud services, or enterprise applications while on the move. The usage occurs in environments where no WLAN is available or a wired connection is not possible. The wireless transmission technology enables flexible and mobile working without physical connections.

Functions and Equipment in Detail
The card features a USB interface in version 2.0/3.2 Gen 1 (3.1 Gen 1), which can be used for connecting external devices or for utilizing USB peripheral devices. The WWAN interface enables the use of mobile networks for data transmission. The card is equipped with Qualcomm® IZat™ Location Technology Gen8C Lite, supporting GPS, GLONASS, BeiDou, and Galileo, enabling precise positioning under various conditions. The M.2 form factor design ensures a compact build that can be integrated into the system architecture of modern laptops.

Technology Explained Simply
The card uses LTE-Advanced technology (3GPP Release 14), designed for high data rates and stable connections in mobile networks. The 4G network generation enables fast and reliable data transmission suitable for professional use. The M.2 host interface is a standard for internal storage and network modules in notebooks, enabling direct connection to the motherboard. The WWAN function (Wide Area Network) establishes a wireless connection via mobile networks, allowing internet access even outside WLAN coverage. The integrated GNSS support (GPS, GLONronass, BeiDou, Galileo) enables precise position determination, useful for navigation or geographically oriented applications.

Compatibility and Accessories
The card is specifically developed for ThinkPad models, particularly the P14s Gen 5 AMD series, but also for T14 G5, L14 G5, X13 2in1 G5, and X12 G2. Compatibility is limited to these models due to specific physical mounting and system requirements. The card is designed for use with Windows 10, representing the system requirement for operating system support.

Installation and Mounting
The card is designed as an integrated component and is inserted into the M.2 slot of the laptop. Installation requires opening the laptop and mechanically mounting it into the designated slot. The physical dimensions are 42 mm (width), 30 mm (depth), and 2.3 mm (height), enabling a compact installation. Mounting is done without additional tools, although technical knowledge of laptop disassembly and internal components is required. The card is not intended for external use but exclusively for internal installation in compatible ThinkPad models.

Advantages in Operation
The card provides a stable and fast internet connection via mobile networks, which is advantageous in mobile work environments. The 4G technology enables high data rates sufficient for professional use. The WWAN function ensures an independent internet connection not reliant on WLAN infrastructures. The GNSS support offers additional functionality for location services. The M.2 form factor design ensures a compact and standardized integration, facilitating maintenance and replaceability. The operating temperature range of -25 to 75 °C and storage range of -40 to 90 °C make the card suitable for a wide range of operating conditions, including industrial or non-office environments.

The warranty period is 1 year, underscoring reliability and manufacturer standards. The card is designed for use in laptops and not intended for other device formats. Technical specifications are tailored to the specific requirements of ThinkPad models, ensuring optimal performance and compatibility.