Key details about this card:

Brand: Gigabyte
Model: GC-Alpine Ridge
Interface: PCI Express x4 (or x8, depending on motherboard slot)
Thunderbolt Version: Thunderbolt 3
Thunderbolt Speed: Up to 40 Gb/s

Ports:
2x Thunderbolt 3 USB-C ports (can be used for data, video, and charging)
1x HDMI port (for video output)
2x Mini DisplayPort (DP 1.2) inputs (for connecting displays to pass through Thunderbolt port)
Certification: Intel Thunderbolt 3 Certified

Features:
Supports daisy-chaining multiple Thunderbolt devices
Compatible with USB-C devices
Supports 4K video output and high-speed data transfer

Included Accessories:

Installation guide
Two cables (Mini DisplayPort to DisplayPort)

Use case:
This card is designed for desktops to add Thunderbolt 3 connectivity, which is useful for:

Fast external storage
High-resolution monitors
Docking stations
Connecting Thunderbolt peripherals (audio interfaces, external GPUs, etc.)