Hardware Spec Index

Tessarix DK-8391 Ultra USB-C 10Gbps Dock (85W)

Thunderbolt & USB4 Docks · Tessarix · SKU DK8391-ULTRA · Released 2019 · Updated 2026-10-26

Key facts

Benchmark index5,760 (Thunderbolt & USB4 Docks scale)
Category rank#28,713
Street price$329
Power115 W
Performance per dollar17.51
Released2019

Specifications

BrandTessarix
ModelTessarix DK-8391 Ultra
Host connectionUSB-C 3.2 Gen 2 (10Gbps), DP Alt Mode
Host charging85 W USB Power Delivery
Displays1× 4K 60 Hz
Downstream Thunderbolt/USB4None
USB-A2× 10Gbps, 1× 5Gbps
Ethernet2.5GbE
Card readerSD 4.0 UHS-II
Audio3.5 mm combo jack
Power supply115 W external

Related guides

USB4 Explained2.5GbE, 5GbE and 10GbE NetworkingThunderbolt 5 Explained

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Cite this page: Hardware Spec Index, “Tessarix DK-8391 Ultra USB-C 10Gbps Dock (85W)”, https://vextor7.com/item/8746266 (accessed 2026-10-26).