10/100 Mbps Single Mode Fiber Media Converter SC 30 km - TAA

Questions & Answers

There's no link detected on the fiber side of the media converter. How can I fix this?
Make sure the entire link-chain is physically connected, so there is no device left unplugged. Check that the fiber device you are connecting supports the same IEEE fiber-optic protocol. For example, if the media converter supports the IEEE standard 802.3z 1000BASE-LX, so must any network switch it is used with. Ensure the fiber device you’re connecting to operates on the same wavelength as the fiber media converter. Check that the fiber cable connecting the fiber media converter and other fiber device supports the correct mode and link speed.

What should I check to choose the correct fiber media converter?
You must match the speed, fiber standard, connector type, and device compatibility on both sides of the connection. Explanation: Selecting the correct fiber media converter requires verifying compatibility between the connected network devices and the fiber link: Speed compatibility: The converter must match the Ethernet speed of the connected devices (for example, 100 Mb/s for 100BASE, 1 Gb/s for 1000BASE, or 10 Gb/s for 10GBASE). Devices with mismatched speeds may not establish a link. Fiber standard compatibility: The converter must support the same fiber standard (for example, SX, LX, SR, FX), which defines wavelength, transmission method, and supported distance. Both ends of the fiber link must use matching standards. Copper interface compatibility: The copper port must match the connected device (for example, 100BASE-T, 1000BASE-T). A mismatch (such as connecting a 100 Mb/s device to a 1 Gb/s-only port) may prevent link detection. Connector compatibility: The fiber connectors (such as LC, SC, or ST) must match the media converter ports or be used with appropriate adapters. SFP compatibility (if applicable): Open SFP media converters require a compatible SFP or SFP+ transceiver that matches the required fiber standard and speed. Fiber media converters can be used to convert between copper and fiber connections or to extend Ethernet networks over fiber. When used in extender applications, both ends of the fiber link must use compatible standards, and using the same model of media converter on each end is recommended to ensure reliable operation.

What is the difference between UPC and APC fiber connectors, and which type do StarTech.com fiber products use?
UPC and APC connectors differ in their end-face polish, and StarTech.com fiber products use UPC connectors. Explanation: UPC (Ultra Physical Contact) and APC (Angled Physical Contact) are fiber connector types that differ in how the fiber end face is polished: UPC connectors: The fiber end face is polished flat with a slight dome shape to ensure direct core contact and low insertion loss. APC connectors: The fiber end face is polished at an 8-degree angle to reduce back reflection in high-performance applications. UPC and APC connectors are not compatible and should not be mated. The angled surface of an APC connector prevents proper alignment with a UPC connector, which can result in high signal loss or a failed connection. StarTech.com fiber products use UPC connectors, so they must be connected to other UPC-compatible fiber interfaces to ensure proper operation.

What DC barrel connector power plug types do StarTech.com products use, and what are their dimensions?
StarTech.com DC barrel connector plug types are defined in the “Plug Type” field of the technical specifications, using a letter code that specifies the connector’s outer diameter (OD) and inner diameter (ID) in millimeters for power adapter compatibility. Explanation: In StarTech.com technical specifications, the “Plug Type” field is a standardized identifier for the exact DC barrel connector size required to power a product. Each plug type is assigned a letter code that corresponds to a specific combination of outer diameter (OD) and inner diameter (ID), measured in millimeters. Common DC barrel plug type dimensions Plug Type OD ID A 2.35 mm 0.7 mm B 4.0 mm 1.7 mm C 4.75 mm 1.7 mm H 3.4 mm 1.3 mm L 5.0 mm 2.5 mm M 5.5 mm 2.1 mm N 5.5 mm 2.5 mm The DC barrel connector plug type must match both the outer diameter and inner diameter exactly. A mismatch between the StarTech.com product requirement and the power adapter connector can prevent proper fit or stable power delivery, which may result in device startup failure or intermittent operation. The plug type defines only the physical connector size. The plug type does not define electrical power requirements such as voltage, current, or polarity. The power adapter used with a StarTech.com product must match the product’s specified electrical requirements. Using an incompatible power adapter can cause device malfunction or permanent damage. This standardized DC barrel connector plug type system enables IT professionals and procurement teams to verify connector dimensions, ensure power adapter compatibility, standardize hardware deployments, and identify the correct replacement power supply for StarTech.com products.