Hardware Spec Index

Vantrel NX-6638 Ultra 2.5GbE RJ45 USB Adapter

Network Cards · Vantrel · SKU NX6638-ULTRA · Released 2025 · Updated 2026-10-24

Key facts

Benchmark index2,997 (Network Cards scale)
Category rank#17,457
Street price$159
Power3 W
Performance per dollar18.85
Released2025

Specifications

BrandVantrel
ModelVantrel NX-6638 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

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Cite this page: Hardware Spec Index, “Vantrel NX-6638 Ultra 2.5GbE RJ45 USB Adapter”, https://vextor7.com/item/15464231 (accessed 2026-10-24).