Hardware Spec Index

Tessarix NX-4120 Ultra 5GbE RJ45 USB Adapter

Network Cards · Tessarix · SKU NX4120-ULTRA · Released 2021 · Updated 2026-10-19

Key facts

Benchmark index2,263 (Network Cards scale)
Category rank#7,459
Street price$79
Power3 W
Performance per dollar28.65
Released2021

Specifications

BrandTessarix
ModelTessarix NX-4120 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
Tessarix NX-9266 Ultra Dual-Port 10GbE SFP+ PCIe Network Card5,733$449Compare
Strivon NX-7386 Ti 25GbE SFP28 PCIe Network Card6,100$499Compare
Vantrel NX-2263 Max 25GbE SFP28 PCIe Network Card5,756$479Compare
Strivon NX-3683 Ultra 2.5GbE RJ45 PCIe Network Card1,080$19Compare
Tessarix NX-9324 Ultra 25GbE SFP28 PCIe Network Card5,886$429Compare
Tessarix NX-9338 Plus 2.5GbE RJ45 PCIe Network Card1,167$29Compare

All Network Cards · JSON

Cite this page: Hardware Spec Index, “Tessarix NX-4120 Ultra 5GbE RJ45 USB Adapter”, https://vextor7.com/item/69720929 (accessed 2026-10-19).