Hardware Spec Index

Tessarix DK-3912 XT USB4 40Gbps Dock (96W)

Thunderbolt & USB4 Docks · Tessarix · SKU DK3912-XT · Released 2026 · Updated 2026-10-19

Key facts

Benchmark index4,208 (Thunderbolt & USB4 Docks scale)
Category rank#45,180
Street price$219
Power126 W
Performance per dollar19.21
Released2026

Specifications

BrandTessarix
ModelTessarix DK-3912 XT
Host connectionUSB4 (40Gbps)
Host charging96 W USB Power Delivery
DisplaysUp to 2× 4K 60 Hz or 1× 8K 30 Hz
Downstream Thunderbolt/USB43× Thunderbolt 4 / USB4
USB-A2× 10Gbps, 1× 5Gbps
Ethernet2.5GbE
Card readerSD 4.0 UHS-II
Audio3.5 mm combo jack
Power supply126 W external

Related guides

USB4 ExplainedThunderbolt 5 Explained2.5GbE, 5GbE and 10GbE Networking

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Cite this page: Hardware Spec Index, “Tessarix DK-3912 XT USB4 40Gbps Dock (96W)”, https://vextor7.com/item/17513783 (accessed 2026-10-19).