If you're a die-hard Amazon customer, try the I/O Crest SY-ADA24005 USB 2.0 Ethernet Adapter.It's currently priced at $7.90, but that includes free shipping for Amazon Prime subscribers. One thing ...

Mellanox offers ConnectX-2 dual I/O port adapter with InfiniBand and Ethernet. Staff Virtualization and cloudcomputing infrastructure deployments are growing in scale and complexity.

Designed to work with existing cable infrastructures ranging from Cat 5 to Cat 7, the OWC 2-Port 10 Gigabit Ethernet PCIe Network Adapter supports auto-negotiation of 10Gb/s, 5Gb/s, 2.5Gb/s, 1Gb/s ...

The new I/O module controls stepper motors with Modbus/TCP, Ethernet/IP or PROFINET interface to host PC, PLC or PAC.