Hardware Spec Index

Tessarix NX-1239 Pro 2.5GbE RJ45 USB Adapter

Network Cards · Tessarix · SKU NX1239-PRO · Released 2025 · Updated 2026-10-26

Key facts

Benchmark index1,527 (Network Cards scale)
Category rank#5,647
Street price$39
Power2 W
Performance per dollar39.15
Released2025

Specifications

BrandTessarix
ModelTessarix NX-1239 Pro
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
Vantrel NX-1560 Prime 2.5GbE RJ45 PCIe Network Card1,237$39Compare
Vantrel NX-7871 XT 5GbE RJ45 PCIe Network Card4,340$219Compare
Quorvex NX-7332 Ultra 10GbE RJ45 Thunderbolt Adapter4,450$259Compare
Tessarix NX-8733 Max 2.5GbE RJ45 PCIe Network Card2,084$69Compare
Strivon NX-3662 Core 2.5GbE RJ45 PCIe Network Card2,010$59Compare
Tessarix NX-8440 Edge 10GbE RJ45 PCIe Network Card4,780$289Compare

All Network Cards · JSON

Cite this page: Hardware Spec Index, “Tessarix NX-1239 Pro 2.5GbE RJ45 USB Adapter”, https://vextor7.com/item/3232415 (accessed 2026-10-26).