Design
Component for	Laptop
Antenna design	Internal
Certification	ISO/ IEC 7816-3, and MIPI
Compatible products	ThinkPad
Internal
Network
Mobile network generation	5G
Operational conditions
Operating temperature (T-T)	-30 - 75 °C
Operating relative humidity (H-H)	5 - 95%
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
Weight & dimensions
Width	52 mm
Depth	30 mm
Height	2.3 mm
Weight	8.7 g

The Lenovo 4XC1Q34838 is an integrated M.2 WWAN module, specifically developed for use in ThinkPad laptops. It serves as a wireless communication module for mobile broadband connectivity and enables the use of mobile networks for data transmission. The module is based on the Quectel RM520N-GL chipset and is designed for use in notebooks where an integrated, wireless network connection is required.

Applications
This module is designed for mobile working environments where a stable and fast internet connection via mobile networks is required. It is particularly suitable for ThinkPad notebooks used in businesses, field service, or mobile work environments. Support for multiple mobile network standards ensures high connection availability in various regions and networks.

Functions and Features in Detail
The module provides data connectivity in mobile network generations 5G NR (SA and NSA), LTE-FDD, LTE-TDD, DC-HSDPA, HSPA+, HSDPA, HSUPA, and WCDMA. This wide range of network standards enables flexible use in different mobile network environments. The WWAN technology (Wireless Wide Area Network) ensures a wide-reaching, wireless connection that operates independently of local WLAN networks. The module features an internally integrated antenna, designed for optimal signal transmission within the laptop housing. The M.2 interface enables compact and standardized installation in the laptop, with the host interface corresponding to M.2-Key-B.

Technology Explained Simply
The module uses 5G NR technology, known for high data rates and low latency. Support for SA (Standalone) and NSA (Non-Standalone) 5G networks allows flexible use in various network infrastructures. Additionally, a wide range of LTE and UMTS network standards are supported, ensuring compatibility with existing mobile networks. The eSIM function is optionally available, enabling contactless, software-based SIM card management without requiring a physical SIM card.

Compatibility and Accessories
The module is specifically developed for ThinkPad laptops and is compatible with these devices. It supports embedded operating systems such as Windows, Linux, and Android, enabling broad use in various IT environments. Certification according to ISO/IEC 7816-3 and MIPI ensures compliance with international standards for electronic cards and interfaces.

Installation and Mounting
The module is designed as an integrated component and is installed in the laptop via the M.2 interface. Installation requires opening the laptop and inserting the module into the corresponding M.2 slot. The module dimensions are 52 mm (width), 30 mm (depth), and 2.3 mm (height), with a weight of 8.7 g. This compact design fits standard M.2 form factors for notebooks.

Operational Advantages
The integrated WWAN technology provides a reliable, wireless connection that operates independently of WLAN networks. Support for multiple mobile network standards increases network availability and stability. The internally integrated antenna ensures optimal signal transmission within the laptop housing. The M.2 interface enables compact and standardized installation, which can be seamlessly integrated into ThinkPad laptops. The operating temperature range of -30 to 75 °C and relative humidity of 5 to 95 % during operation make the module suitable for a wide range of operating conditions, including mobile and industrial environments.