StarTech PCI Express Ethernet Interface Card - LAN 10/100 Network Card - Network Adapter - PCIe Low Profile - 10/100 Ethernet (PEX100S) - PEX100S

StarTech.com 1 Port PCI Express 10/100 Ethernet Network Interface Adapter Card. Internal. Connectivity technology: Wired, Host interface: PCI Express. Maximum data transfer rate: 100 Mbit/s

https://www.startech.com/Networking-IO/Adapter-Cards/PCI-Express-10-100-Dual-Profile-Ethernet-Card~PEX100S

Add a 10/100Mbps Ethernet port to a desktop computer through a PCI Express slot
This PCI Express based 10/100 Ethernet Card provides a simple way to connect a PCIe enabled server or workstation to a 10/100 Ethernet network and offers a broad range of features and functions, including support for both Full and Half Duplex operation as well as Wake On LAN (WOL) Power Management.
The PEX100S Ethernet Card includes both standard and low profile brackets and is compatible with most mATX (Slimline) and ATX system form factors, and features Auto MDI/MDIX automatic configuration, which helps to simplify installation and configuration.
The StarTech.com Advantage
- Cost effective and simple Ethernet networking for a desktop computer systems
- Backed by a StarTech.com lifetime warranty and free lifetime technical support