The Sonnet Tech Thunderbolt Dual HDMI 21 Adapter from SoNNeT allows for the simultaneous connection of two HDMI displays to a Thunderbolt-enabled computer, supporting resolutions of up to 4K at 60 Hz on both monitors. This compact adapter measures 8.5 cm in length, 3.2 cm in width, and 1.5 cm in height, weighing just 45 g, making it particularly portable for mobile professionals. It offers Thunderbolt 3 compatibility with a USB-C connector and does not require an external power source for operation. The adapter supports extended desktop mode, mirror mode, and mixed resolution configurations for flexible workspace arrangements. The aluminum casing ensures durability and effective heat dissipation, providing stable performance even during prolonged use. It is compatible with macOS and Windows operating systems that support Thunderbolt 3 or USB-C DisplayPort Alt Mode. It includes HDCP 2.2 support for protected content playback and maintains signal integrity through shielded cables and gold-plated connectors. This solution is particularly suitable for users who need additional display connectivity without occupying multiple computer ports, offering reliable performance for presentations, multitasking, and creative workflows. The adapter operates within a temperature range of 0 °C to 40 °C and comes with a 15 cm Thunderbolt 3 cable for convenient connection. The plug-and-play functionality requires no additional drivers on most systems, providing immediate setup convenience. The product represents a successor to previous dual-display adapters with improved compatibility for modern display standards.