Design
Product colour	Green
Certification	FCC, CE, CB, RoHS, UKCA, RCM
Internal
Operational conditions
Operating temperature (T-T)	0 - 50 °C
Operating relative humidity (H-H)	0 - 90%
Other features
Compatibility	ThinkCentre Tiny M IO Expansion Box
Packaging data
Quantity per pack	1 pc(s)
Package width	135 mm
Package depth	130 mm
Package height	35 mm
Package weight	70 g
Package type	Box
Manual
Ports & interfaces
Host interface	BTB
Output interface	DisplayPort
System requirements
Windows operating systems supported	Windows 11
Weight & dimensions
Width	39.5 mm
Weight	14.1 g

The Lenovo interface card with manufacturer number 4XH1U89937 is an internal adapter module for use in ThinkCentre Tiny M IO Expansion Box systems. The device extends connection options by providing a DisplayPort output. Connection to the host system is via a BTB interface, specifically designed for integration into compact computer enclosures. The card is finished in green and features a compact design with a width of 39.5 mm and a weight of 14.1 g, making it suitable for use in space-constrained systems.

Applications
This module is primarily intended for use in ThinkCentre Tiny M IO Expansion Box systems, where it increases the number of available DisplayPort connections. It enables the connection of external monitors, projectors, or other DisplayPort-compatible devices. The card is designed for use in office environments and facilities with compact workstations, where flexible expansion of I/O functions is required.

Functions and Equipment in Detail
The interface card provides a DisplayPort output, enabling the transmission of video signals and data over a single cable. The BTB host interface ensures a stable and reliable connection to the main system. The card is certified for operation under Windows 11, ensuring compatibility with the common operating system environment. The certifications FCC, CE, CB, RoHS, UKCA, and RCM confirm compliance with international standards for electromagnetic compatibility, safety, and environmental friendliness.

Technology Explained Simply
The BTB interface (Board-to-Board) is a specialized connection technology used for integrating modules into compact devices. It enables a direct mechanical and electrical connection between the card and the main system, without requiring additional connectors or cables. The DisplayPort output supports the transmission of high-resolution video signals and can also enable audio and data transmission depending on the system configuration. The card is designed for operating temperatures from 0 to 50 °C and can operate at relative humidity levels from 0 to 90 %, making it suitable for use in controlled indoor environments.

Compatibility and Accessories
The card is specifically developed for the ThinkCentre Tiny M IO Expansion Box and extends its I/O functions. Compatibility is limited to this specific platform. The card is packaged in a box that includes an operating manual. The packaging dimensions are 135 mm (width), 130 mm (depth), and 35 mm (height), with a package weight of 70 g.

Installation and Mounting
Installation is performed by inserting the card into the ThinkCentre Tiny M IO Expansion Box. The BTB interface enables a direct mechanical and electrical connection. No additional tools or software installations are required, as the card is integrated at the hardware level. The operating manual included in the delivery provides guidance for correct installation.

Operational Advantages
The card enables flexible expansion of connection options in compact systems without requiring additional external adapters or cables. Integration via the BTB interface ensures a stable connection and minimizes the number of external connections. Certification for Windows 11 ensures seamless operation in common computing environments. The low profile and lightweight design contribute to ease of maintenance and space-saving.