Hardware Spec Index

Tessarix NX-6921 Ultra 5GbE RJ45 USB Adapter

Network Cards · Tessarix · SKU NX6921-ULTRA · Released 2019 · Updated 2026-10-20

Key facts

Benchmark index2,114 (Network Cards scale)
Category rank#1,710
Street price$69
Power3 W
Performance per dollar30.64
Released2019

Specifications

BrandTessarix
ModelTessarix NX-6921 Ultra
Speed5GbE (5G/1G/100M)
Ports1× RJ45
Host interfaceUSB 3.2 Gen 2 (Type-C)
CablingCat5e or better (100 m)
StandardIEEE 802.3bz (2.5G/5GBASE-T)
Jumbo framesUp to 9 KB
OffloadsTSO, checksum offload
Wake-on-LANNo
VLANIEEE 802.1Q
OS supportWindows 11, Linux, FreeBSD

Related guides

2.5GbE, 5GbE and 10GbE NetworkingPCIe Lanes Explained

Similar Network Cards

ModelBenchmarkPriceCompare
Vantrel NX-7443 Ultra 2.5GbE RJ45 PCIe Network Card898$29Compare
Strivon NX-2482 XT 10GbE RJ45 PCIe Network Card4,138$269Compare
Quorvex NX-5544 Max 5GbE RJ45 PCIe Network Card3,279$149Compare
Vantrel NX-4518 Edge 25GbE SFP28 PCIe Network Card5,131$409Compare
Strivon NX-8967 SE Dual-Port 10GbE SFP+ PCIe Network Card4,265$299Compare
Tessarix NX-4201 Plus 2.5GbE RJ45 USB Adapter954$29Compare

All Network Cards · JSON

Cite this page: Hardware Spec Index, “Tessarix NX-6921 Ultra 5GbE RJ45 USB Adapter”, https://vextor7.com/item/18445672 (accessed 2026-10-20).