TP-Link MC111CS is a 10/100Mbps WDM media converter for single-mode fiber up to 20km. Compact, reliable, and standards-compliant, ideal for enterprise networking in India.
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The TP-Link MC111CS is a 10/100Mbps WDM single-mode fiber media converter designed to convert 100BASE-FX fiber connectivity to 10/100BASE-TX copper Ethernet and vice versa. It provides a practical way to connect Ethernet devices across long single-mode fiber links where standard copper Ethernet cabling cannot cover the required distance.
The MC111CS features one 100M SC/UPC fiber port and one 10/100Mbps RJ45 Ethernet port. Using WDM technology, it transmits and receives data over a single fiber strand, reducing the amount of fiber cabling required for a point-to-point connection.
With a specified fiber transmission distance of up to 20km over compatible single-mode fiber, the MC111CS is suitable for building-to-building links, campus networks, CCTV infrastructure, remote network extensions and other installations where Ethernet needs to be transported over long-distance fiber.
The primary function of the MC111CS media converter is to bridge the gap between fiber-optic and copper Ethernet networks. Its SC/UPC fiber interface accepts a compatible single-mode fiber connection, while its RJ45 port connects to standard copper Ethernet equipment.
This allows network administrators to extend Ethernet connectivity beyond the normal copper cable distance by transporting network traffic over single-mode optical fiber.
The converter supports IEEE 802.3u 100BASE-FX fiber and 10/100BASE-TX Ethernet standards. The fiber interface operates at 100Mbps, while the RJ45 interface supports 10Mbps and 100Mbps Ethernet connections.
One of the main features of the TP-Link MC111CS is Wavelength Division Multiplexing (WDM). Unlike conventional fiber links that normally use separate fiber strands for transmitting and receiving data, WDM allows the MC111CS to use different optical wavelengths for the two directions over a single fiber strand.
The MC111CS uses:
This single-fiber design can reduce fiber consumption and simplify installations where only one strand of single-mode fiber is available.
The MC111CS is not normally used as an isolated WDM endpoint. Because it transmits at 1550nm and receives at 1310nm, the remote converter must use the complementary wavelength arrangement.
TP-Link specifically identifies the MC112CS as one compatible partner. The MC112CS transmits at 1310nm and receives at 1550nm, creating the complementary WDM pair required for bidirectional communication over a single fiber strand.
Therefore, a typical point-to-point installation can use one MC111CS at one location and one MC112CS at the opposite location, with compatible single-mode fiber between them.
The MC111CS supports fiber transmission distances of up to 20km when used with compatible single-mode fiber and within the specified optical conditions.
This makes it suitable for applications where a standard copper Ethernet connection cannot cover the required distance. Typical deployments can include inter-building network links, campus connectivity, remote offices and long-distance surveillance network extensions.
The 20km figure is a maximum specified fiber distance rather than a guarantee of usable network performance in every installation. Actual link performance depends on fiber quality, connectors, splicing, optical loss and installation conditions.
The MC111CS uses a 100M SC/UPC fiber interface. The converter is designed for single-mode fiber and is therefore different from TP-Link’s multimode media converters such as models designed around 100BASE-FX multimode connectivity.
When planning a fiber link, the connector type, fiber mode, wavelength and optical characteristics of both endpoints must be compatible.
The copper side of the MC111CS provides one 10/100Mbps RJ45 Ethernet port. The port supports both 10Mbps and 100Mbps Ethernet operation and includes Auto MDI/MDIX.
Auto MDI/MDIX allows the port to automatically detect the appropriate cable configuration, reducing the need to use specific straight-through or crossover Ethernet cables.
Because this is a Fast Ethernet media converter, the MC111CS is not a Gigabit media converter. It should not be used where 1000Mbps fiber-to-copper conversion is required.
The MC111CS supports automatic negotiation of the half-duplex and full-duplex transfer mode on the applicable Ethernet connection. This allows it to operate with compatible Ethernet equipment without requiring manual duplex configuration.
The converter is designed for full wire-speed forwarding within the supported 100Mbps Ethernet specification.
The TP-Link MC111CS can be deployed as a standalone media converter, so a separate rack chassis is not required for a basic point-to-point installation.
For higher-density deployments, TP-Link also supports installation of compatible media converters in its MC1400 chassis. This can be useful when multiple fiber-to-Ethernet conversion links need to be centralized in a rack environment.
The MC111CS includes front-panel LED indicators for power and network activity. These indicators provide a quick visual way to check whether the converter is powered and whether the relevant network link is active.
The MC111CS uses an external power adapter. TP-Link’s current India specification lists maximum power consumption of approximately 1.23W, making it a low-power network accessory suitable for continuous operation.
The package includes the media converter, power adapter and installation guide.
| Specification | Details |
|---|---|
| Product Type | 10/100Mbps WDM Single-Mode Media Converter |
| Fiber Standard | 100BASE-FX |
| Copper Standard | 10/100BASE-TX |
| Fiber Port | 1 × 100M SC/UPC |
| Ethernet Port | 1 × 10/100M RJ45 |
| Fiber Type | Single-Mode Fiber |
| WDM | Yes |
| WDM TX | 1550nm |
| WDM RX | 1310nm |
| Maximum Fiber Distance | Up to 20km |
| Auto MDI/MDIX | Yes |
| Duplex Mode | Auto-negotiation of Half/Full Duplex |
| Standards | IEEE 802.3i, IEEE 802.3u |
| Chassis Compatibility | TP-Link MC1400 |
| LED Indicators | PWR, Link/Act |
| Power Supply | External Power Adapter |
| Maximum Power Consumption | 1.23W |
| Dimensions | 94.5 × 73 × 27mm |
| Operating Temperature | 0°C to 40°C |
| Storage Temperature | -40°C to 70°C |
| Operating Humidity | 10% to 90%, non-condensing |
| Storage Humidity | 5% to 90%, non-condensing |
| Certifications | FCC, CE, RoHS |
| Fact | TP-Link MC111CS |
|---|---|
| Brand | TP-Link |
| Model | MC111CS |
| Product Category | Fiber Media Converter |
| Speed | 10/100Mbps |
| Fiber Standard | 100BASE-FX |
| Fiber Type | Single-Mode |
| Fiber Connector | SC/UPC |
| Fiber Port Speed | 100Mbps |
| Copper Port | 1 × 10/100Mbps RJ45 |
| WDM | Yes, single-fiber bidirectional transmission |
| Transmit Wavelength | 1550nm |
| Receive Wavelength | 1310nm |
| Maximum Fiber Distance | Up to 20km |
| Compatible WDM Partner | TP-Link MC112CS |
| Gigabit Support | No |
| Power | External Power Adapter |
| Chassis Support | TP-Link MC1400 |
The TP-Link MC111CS is a 10/100Mbps WDM media converter that converts 100BASE-FX single-mode fiber to 10/100BASE-TX copper Ethernet and vice versa.
The MC111CS is designed for single-mode fiber using an SC/UPC connector.
TP-Link specifies a maximum fiber distance of up to 20km under compatible single-mode fiber and specified operating conditions.
No. The MC111CS is a 10/100Mbps Fast Ethernet media converter. Its fiber interface operates at 100Mbps and its RJ45 interface supports 10/100Mbps.
The MC111CS uses WDM technology, allowing transmit and receive data to travel over a single fiber strand using different wavelengths.
The MC111CS transmits at 1550nm and receives at 1310nm.
TP-Link identifies the MC112CS as a compatible complementary WDM media converter. The MC112CS transmits at 1310nm and receives at 1550nm, complementing the MC111CS wavelengths.
Yes. The MC111CS can be used as a standalone unit without a chassis. It can also be installed in a compatible TP-Link MC1400 chassis for centralized deployments.
Yes. The fiber interface is a 100M SC/UPC port.
No. Its copper Ethernet interface is 10/100Mbps RJ45.
Yes. TP-Link specifies an external power adapter, and the adapter is included in the listed package contents.
Yes, it can be used for compatible Ethernet-based CCTV network links where 100Mbps bandwidth is sufficient. It is particularly useful for extending a surveillance network over long single-mode fiber.
| Feature | MC111CS | MC112CS |
|---|---|---|
| Speed | 10/100Mbps | 10/100Mbps |
| Fiber | Single-Mode | Single-Mode |
| Connector | SC/UPC | SC/UPC |
| WDM TX | 1550nm | 1310nm |
| WDM RX | 1310nm | 1550nm |
| Maximum Distance | Up to 20km | Up to 20km |
| Typical Pairing | MC112CS | MC111CS |
The MC111CS should not be confused with the TP-Link MC110CS. Both are 10/100Mbps single-mode media converters with SC/UPC interfaces, but the MC111CS uses WDM single-fiber transmission with 1550nm TX and 1310nm RX, while the MC110CS uses 1310nm for transmission and reception and is designed for a conventional two-fiber connection.
The TP-Link MC111CS 10/100Mbps WDM Media Converter provides a simple solution for converting Fast Ethernet copper connectivity to long-distance single-mode fiber. Its SC/UPC interface, single-fiber WDM operation, 20km specified range, Auto MDI/MDIX, standalone installation and MC1400 chassis compatibility make it suitable for network infrastructure, CCTV, building-to-building and remote Ethernet applications.
For installations where only one single-mode fiber strand is available, the MC111CS paired with a compatible MC112CS can provide bidirectional Ethernet communication without requiring a second fiber strand.
Explore more TP-Link networking products in India, including media converters, switches, routers, access points and other networking accessories.
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