Unusual LAN cable featuring two wires
Unusual LAN cable featuring two wires
This cable supports up to 100Mbps and beyond isn't possible. Such connections often come with older DSL modems that included either Ethernet or USB ports on the device side. On the modem side you'd find all eight wires, while the "PC" side would connect via a USB 2.0 male connector. If USB was used, the modem's Ethernet port would change to USB alternate mode. I've noticed these types of cables being shipped with Samsung security cameras, which can also provide PoE but are limited to 100Mbps.
I acquired some units using outdated routers with just 100Mbit ports, even though they had four-pin connectors on both ends. It doesn’t make sense to use all the wires from one end since the main goal is to cut costs by keeping the cable partially empty.