Hardware Spec Index

Vantrel NX-7921 Ultra 2.5GbE RJ45 USB Adapter

Network Cards · Vantrel · SKU NX7921-ULTRA · Released 2023 · Updated 2026-10-22

Key facts

Benchmark index2,892 (Network Cards scale)
Category rank#41,865
Street price$149
Power3 W
Performance per dollar19.41
Released2023

Specifications

BrandVantrel
ModelVantrel NX-7921 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
Tessarix NX-2957 Pro 25GbE SFP28 PCIe Network Card4,117$259Compare
Quorvex NX-1167 Pro 5GbE RJ45 PCIe Network Card2,499$99Compare
Vantrel NX-3855 Ultra 5GbE RJ45 PCIe Network Card2,436$99Compare
Tessarix NX-1290 SE 2.5GbE RJ45 PCIe Network Card1,558$39Compare
Tessarix NX-7652 Core 5GbE RJ45 PCIe Network Card2,632$119Compare
Quorvex NX-4182 Core Dual-Port 25GbE SFP28 PCIe Network Card6,100$489Compare

All Network Cards · JSON

Cite this page: Hardware Spec Index, “Vantrel NX-7921 Ultra 2.5GbE RJ45 USB Adapter”, https://vextor7.com/item/21498168 (accessed 2026-10-22).