Hardware Spec Index

Tessarix NX-8921 XT 2.5GbE RJ45 USB Adapter

Network Cards · Tessarix · SKU NX8921-XT · Released 2019 · Updated 2026-10-20

Key facts

Benchmark index864 (Network Cards scale)
Category rank#2,962
Street price$19
Power2 W
Performance per dollar45.47
Released2019

Specifications

BrandTessarix
ModelTessarix NX-8921 XT
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-9241 Edge 5GbE RJ45 PCIe Network Card4,488$279Compare
Vantrel NX-3200 Plus 10GbE RJ45 PCIe Network Card5,704$419Compare
Tessarix NX-2595 Core Dual-Port 10GbE SFP+ PCIe Network Card2,590$99Compare
Vantrel NX-4414 Edge 10GbE RJ45 PCIe Network Card3,746$209Compare
Quorvex NX-5616 Ultra 5GbE RJ45 PCIe Network Card2,983$139Compare
Strivon NX-7000 Ti Dual-Port 10GbE SFP+ PCIe Network Card5,210$419Compare

All Network Cards · JSON

Cite this page: Hardware Spec Index, “Tessarix NX-8921 XT 2.5GbE RJ45 USB Adapter”, https://vextor7.com/item/9303434 (accessed 2026-10-20).