Design
Component for	Laptop
Certification	GCF, PTCRB, CCC, CTA, SRRC, CE, IC, FCC, CBRS, JATE, TELEC, RCM
Compatible products	ThinkPad P16 Gen 3
Internal
Network
Maximum data transfer rate	4670 Mbit/s
Mobile network generation	4G
Operational conditions
Operating temperature (T-T)	-10 - 55 °C
Operating relative humidity (H-H)	5 - 95%
Packaging data
Package width	157 mm
Package depth	58 mm
Package height	17 mm
Package weight	76 g
Ports & interfaces
Connectivity technology	Wireless
Host interface	M.2
Interface	WWAN
PCI version	3.0
Power
Output voltage	3.3 V
System requirements
Windows operating systems supported	Windows 11 Pro
Weight & dimensions
Width	52 mm
Depth	30 mm
Height	2.3 mm
Weight	65 g

The Lenovo 4XC1U10820 is an integrated WWAN module (Wireless Wide Area Network) designed for use in laptops, specifically developed for the ThinkPad P16 Gen 3 model. It serves as a wireless network card for mobile data connection via cellular networks and enables the use of 4G networks. The component connects via an M.2 host interface and uses PCI Express version 3.0 as the interface to the system. The maximum data transfer rate is 4670 Mbit/s in the downlink, ensuring fast and reliable connectivity for mobile applications. The output voltage is 3.3 V, which is standard for power supply within laptops.

Applications
This module is primarily designed for mobile work environments where a stable internet connection is required independently of fixed network infrastructures. It is particularly suitable for users of the ThinkPad P16 Gen 3 who require data access, email, cloud services, or video conferencing while on the move. Certification according to GCF, PTCRB, CCC, CTA, SRRC, CE, IC, FCC, CBRS, JA
TE, TELEC, and RCM ensures compliance with international standards for radio devices and network components.

Functions and Features in Detail
The module supports 4G mobile network generation and offers high data rates suitable for applications requiring high bandwidth. The Dual SIM Single Active (DSSA) function allows the use of two SIM cards, with only one active at a time, increasing flexibility in network selection. Receive diversity improves signal quality and network stability, especially in areas with weak reception. Compatibility is limited to the ThinkPad P16 Gen 3, ensuring direct integration into the notebook system.

Technology Explained Simply
WWAN technology enables wireless communication over long distances, similar to a mobile phone, but for use in computers. The M.2 interface is a standard form factor for internal modules, enabling a compact design. The PCIe 3.0 interface ensures fast data transfer between the module and the main system. The operating temperature range of -10 °C to 55 °C and relative humidity of 5 % to 95 % during operation demonstrate the module’s robustness under various environmental conditions. Dimensions are 52 mm (width) × 30 mm (depth) × 2.3 mm (height), and weight is 65 g.

Compatibility and Accessories
The module is exclusively intended for use in the ThinkPad P16 Gen 3. No additional accessories or adapters are required, as it integrates directly into the notebook. Compatibility with Windows 11 Pro is guaranteed, defining the system requirements for operation.

Installation and Mounting
Installation is performed by inserting the module into the designated M.2 slot of the ThinkPad P16 Gen 3. Mounting requires no additional tools or components, as the module integrates directly into the notebook. Detailed installation instructions are included in the laptop’s manufacturer manual. The packaging has dimensions of 157 mm (width) × 58 mm (depth) × 17 mm (height) and weighs 76 g.

Operational Advantages
Using the Lenovo 4XC1U10820 provides mobile internet connectivity without dependence on WLAN networks. The high data rate and 4G support ensure a stable and fast connection. Receive diversity and the DSSA function enhance connection reliability. Integration into the ThinkPad P16 Gen 3 requires no additional hardware or software adjustments, simplifying setup. Certifications guarantee compliance with international standards and reliability in use.