Fiber NICs can accept a variety of media depending on distance and environment. MMF (OM3/OM4) = short distance (<500 m). DAC = cheapest, lowest latency, ≤3–7 m. Fiber NICs connect to hosts. Discover high-performance fiber optic network interface cards for servers and desktops. Find single and dual port SFP+ adapters with reliable connectivity. The most common families: Key insight: Choosing the right NIC starts with understanding speed requirements and the optics or cabling ecosystem you already have. The primary use of SFP network cards is their ability to provide different interface types, allowing connections over various distances and across different media types. Utilizing a PCIe x1 interface, it acts as a definitive signal conduit for full-duplex transmission. Wake-on-LAN functionality allows remote start-up.