Hardware Spec Index

Quorvex NX-3991 XT 2.5GbE RJ45 USB Adapter

Network Cards · Quorvex · SKU NX3991-XT · Released 2019 · Updated 2026-10-22

Key facts

Benchmark index2,412 (Network Cards scale)
Category rank#47,737
Street price$89
Power3 W
Performance per dollar27.10
Released2019

Specifications

BrandQuorvex
ModelQuorvex NX-3991 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
Vantrel NX-5821 Edge 5GbE RJ45 PCIe Network Card3,336$149Compare
Quorvex NX-7238 Max 2.5GbE RJ45 PCIe Network Card843$19Compare
Vantrel NX-4320 XT 5GbE RJ45 USB Adapter3,519$159Compare
Quorvex NX-6746 Edge Dual-Port 10GbE RJ45 PCIe Network Card3,678$169Compare
Tessarix NX-2819 SE 2.5GbE RJ45 PCIe Network Card1,122$29Compare
Tessarix NX-7389 Ti Dual-Port 10GbE RJ45 PCIe Network Card3,838$219Compare

All Network Cards · JSON

Cite this page: Hardware Spec Index, “Quorvex NX-3991 XT 2.5GbE RJ45 USB Adapter”, https://vextor7.com/item/8154271 (accessed 2026-10-22).