Amazon.com: DriverGenius USB to 2.5G Ethernet Adapter, USB 3.0 Type A to 2.5 Gigabit RJ45 Network LAN Adapter - Compatible for Windows 11, macOS 14 Sonoma(CUG025) : Electronics
power - Network card (link-status LED) still active after shutdown from Windows 7 (but not from XP) - Super User
Iksco : Product : 3Com Megahertz 10/100 LAN PCMCIA PC Card 3CCFE574BT network adapter for laptops
3Com EtherDisk v5.7 for EtherLink III LAN+33.6 Modem PC Card (83-0864-001) : 3Com Corporation : Free Download, Borrow, and Streaming : Internet Archive
3COM 10/100BASE-TX Ethernet Adapter Fast Ether Link XL PCI Card DF63C905-TX L-U | eBay
Open-E JovianDSS - Hardware Compatibility List | Open-E