Hardware Spec Index

Tessarix NX-4640 Ultra 2.5GbE RJ45 USB Adapter

Network Cards · Tessarix · SKU NX4640-ULTRA · Released 2019 · Updated 2026-10-22

Key facts

Benchmark index1,392 (Network Cards scale)
Category rank#3,749
Street price$29
Power2 W
Performance per dollar48.00
Released2019

Specifications

BrandTessarix
ModelTessarix NX-4640 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
Vantrel NX-2771 Edge 5GbE RJ45 PCIe Network Card3,578$179Compare
Vantrel NX-9325 Edge Dual-Port 25GbE SFP28 PCIe Network Card5,571$409Compare
Tessarix NX-3551 XT 2.5GbE RJ45 USB Adapter1,261$29Compare
Vantrel NX-3343 Plus 2.5GbE RJ45 PCIe Network Card2,491$99Compare
Quorvex NX-8939 Edge 5GbE RJ45 PCIe Network Card3,626$209Compare
Tessarix NX-1861 Core 2.5GbE RJ45 USB Adapter814$19Compare

All Network Cards · JSON

Cite this page: Hardware Spec Index, “Tessarix NX-4640 Ultra 2.5GbE RJ45 USB Adapter”, https://vextor7.com/item/964799 (accessed 2026-10-22).