Hardware Spec Index

Tessarix NX-7921 Ultra 2.5GbE RJ45 USB Adapter

Network Cards · Tessarix · SKU NX7921-ULTRA · Released 2019 · Updated 2026-10-24

Key facts

Benchmark index2,278 (Network Cards scale)
Category rank#9,301
Street price$79
Power3 W
Performance per dollar28.84
Released2019

Specifications

BrandTessarix
ModelTessarix NX-7921 Ultra
Speed2.5GbE (2.5G/1G/100M)
Ports1× RJ45
Host interfaceUSB 3.2 Gen 1 (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
Tessarix NX-6095 Prime 2.5GbE RJ45 PCIe Network Card1,610$49Compare
Tessarix NX-8413 Ultra 2.5GbE RJ45 USB Adapter2,378$89Compare
Strivon NX-5800 XT 10GbE RJ45 PCIe Network Card5,224$349Compare
Quorvex NX-6556 Prime 2.5GbE RJ45 USB Adapter1,717$49Compare
Strivon NX-2255 Ultra 5GbE RJ45 PCIe Network Card1,829$59Compare
Strivon NX-8342 SE 5GbE RJ45 PCIe Network Card2,968$139Compare

All Network Cards · JSON

Cite this page: Hardware Spec Index, “Tessarix NX-7921 Ultra 2.5GbE RJ45 USB Adapter”, https://vextor7.com/item/2701288 (accessed 2026-10-24).