1. Nhanganyaya
This manual provides detailed instructions for the installation, operation, and maintenance of the StarTech.com FD121-KVM-EXTENDER DisplayPort KVM Extender Over Fiber Optic. This device allows you to extend a 4K 60Hz DisplayPort video signal and USB KVM control over a fiber optic cable, enabling remote access to a KVM switch, console, or PC from distances up to 984 feet (300 meters) using multi-mode fiber.
2. Chigadzirwa Pamusoroview
2.1 Package Zviri mukati
- 1x KVM Extender Transmitter Unit
- 1x KVM Extender Receiver Unit
- 2x SFP+ Modules (pre-installed)
- 2x USB-A to Micro-B Cables
- 2x Universal Power Adapters (NA/EU/UK/AU)
- Bhuku reMirayiridzo 1x (gwaro iri)

Image: All components included with the StarTech.com FD121-KVM-EXTENDER KVM Extender kit.
2.2 Features
- Extends 4K 60Hz DisplayPort video and USB KVM control up to 984ft (300m) over multi-mode fiber optic cable.
- Supports UHD resolutions up to 3840x2160 at 60Hz (4:4:4).
- DP 1.2 compliant with EDID pass-through for optimal display compatibility.
- Three USB HID ports on the receiver for connecting peripherals (mouse, keyboard, etc.).
- Point-to-point fiber connection requires no drivers or software.
- Compatible with all major operating systems (Windows, macOS, Linux).
- Durable steel chassis designed to reduce electromagnetic interference (EMI).
- SFP+ slots support MSA-compliant modules for both multi-mode and single-mode fiber (single-mode modules sold separately).
2.3 Chikamu Kuzivikanwa

Mufananidzo: Rear view of the KVM Extender Transmitter (left) and Receiver (right) units, highlighting the Power, Link, Monitor, and Host (HID) ports.

Mufananidzo: Mberi view of the KVM Extender units, showing the USB HID ports on the receiver unit.
The KVM Extender consists of two main units: a Transmitter and a Receiver. Each unit features:
- Power Input: Micro-B USB port for connecting the power adapter.
- Link Port: SFP+ slot for fiber optic cable connection.
- Monitor Port: DisplayPort input on the Transmitter, DisplayPort output on the Receiver.
- Host (HID) Port (Transmitter): USB-B port for connecting to the source computer/KVM switch.
- HID Ports (Receiver): USB-A ports for connecting KVM peripherals (keyboard, mouse).
- Mamiriro akatungamira: Indicates power and link status.
- HID LED: Indicates USB HID activity.
3. Setup Instructions
Follow these steps to set up your StarTech.com KVM Extender:
- Power Off Devices: Ensure all devices (source computer, KVM switch, display) are powered off before beginning installation.
- Connect Transmitter to Source:
- Connect a DisplayPort cable from your source computer or KVM switch to the Monitor (Input) port on the KVM Extender Transmitter unit.
- Connect the provided USB-A to Micro-B cable from a USB-A port on your source computer or KVM switch to the Host (HID) port on the KVM Extender Transmitter unit.
- Connect Receiver to Console:
- Connect a DisplayPort cable from the Monitor (Output) port on the KVM Extender Receiver unit to your display.
- Connect your USB keyboard, mouse, or other HID peripherals to the HID USB-A ports on the KVM Extender Receiver unit.
- Batanidza Tambo yeFiber Optic:
- Insert the pre-installed SFP+ modules into the Link ports on both the Transmitter and Receiver units.
- Connect a multi-mode fiber optic cable (not included) between the Link port on the Transmitter and the Link port on the Receiver. Ensure the fiber cable is securely connected.

Image: The KVM Extender Transmitter and Receiver units with SFP+ modules inserted into their respective Link ports.
- Shandisa Simba: Connect the provided power adapters to the Simba input ports on both the Transmitter and Receiver units, then plug the adapters into power outlets.
- Simba Pamidziyo: Power on your display, then your source computer or KVM switch. The Status LEDs on both extender units should illuminate, indicating a successful connection.
4. Operating Instructions
Once the setup is complete, the KVM Extender operates automatically:
- The DisplayPort video signal from your source will be extended to your remote display.
- Your connected USB keyboard and mouse will control the source computer or KVM switch as if they were directly connected.
- The EDID pass-through feature ensures that your display's optimal resolution and refresh rate are communicated to the source device.
- No additional software or drivers are required for operation.
5. Kuchengeta
To ensure the longevity and optimal performance of your KVM Extender:
- Keep the units in a clean, dust-free environment.
- Chenesa kunze nejira rakapfava, rakaoma. Usashandise mishonga yekuchenesa kana zvinonyungudutsa mvura.
- Ensure proper ventilation around both units to prevent overheating.
- Gara uchitarisa zvese zvakabatana netambo kuti uve nechokwadi chekuti zvakachengeteka.
6. Kugadzirisa matambudziko
If you encounter issues with your KVM Extender, refer to the following common troubleshooting steps:
6.1 No Video Display
- Tarisa Simba: Ensure both the Transmitter and Receiver units are powered on and their Status LEDs are illuminated.
- Verify Cable Connections: Confirm that all DisplayPort and fiber optic cables are securely connected to their respective ports on both units and connected devices.
- Fiber Optic Link: Ensure the fiber optic cable is not damaged and is correctly connected between the Transmitter and Receiver. The Link LED should be active.
- Ratidza Kuenderana: Verify your display supports the resolution and refresh rate output by the source device.
- Source Output: Test the source device directly with the display to ensure it is outputting a signal.
6.2 No KVM Control (Keyboard/Mouse Not Responding)
- Tarisa USB Connections: Ensure the USB-A to Micro-B cable is securely connected from the source to the Transmitter's Host (HID) port, and your peripherals are connected to the Receiver's HID ports.
- Peripheral Compatibility: Confirm your keyboard and mouse are standard HID-compliant devices.
- Fiber Optic Link: A stable fiber optic link is required for KVM control. Ensure the link is active.
- Reboot: Try restarting the source computer and then the KVM Extender units.
6.3 Intermittent Signal
- Cable Hunhu: Use high-quality DisplayPort and fiber optic cables.
- Cable Length: Ensure the fiber optic cable length does not exceed the maximum supported distance (984ft/300m for multi-mode).
- EMI: While the units are designed to reduce EMI, ensure they are not placed near strong sources of electromagnetic interference.
- Simba Kugadzikana: Ensure both units are receiving stable power.
7. Zvinotsanangurwa
| Attribute | Value |
|---|---|
| Brand | StarTech |
| Model Number | FD121-KVM-EXTENDA |
| Connector Type | DisplayPort |
| Kubatana Protocol | Fiber Optic |
| Max Kugadziriswa | 3840x2160 @ 60Hz (4K 60Hz) |
| Max Distance (Multi-Mode) | 984ft (300m) |
| Max Distance (Single-Mode) | 1,640ft (500m) (with optional SFP+ modules) |
| Video Standard | DisplayPort 1.2 |
| USB Tsigiro | USB HID (Keyboard, Mouse) |
| Operating System Kuenderana | OS Independent (Windows, macOS, Linux) |
| Dimensions (L x W x H) | 4.5 x 3.1 x 1.1 inches (11.4 x 7.9 x 2.8 cm) |
| Item Weight | 1.16 makirogiramu (0.53 kg) |
| Housing Material | Simbi |
| TAA Inopindirana | Ehe |
8. Safety Information
Ndokumbira uverenge uye uteedzere aya mirairo yekuchengetedza kudzivirira kukuvara kuchigadzirwa kana kukuvara kwauri:

Image: Safety warnings and precautions for the KVM Extender.
- Njodzi dzeMagetsi: Do not use damaged or frayed cables. Exposed wires can lead to electric shocks. Ensure all cables are properly routed and connected to prevent hazards.
- Kuunganidzwa kwekupisa: Overloaded or tightly bundled cables can overheat and pose a fire hazard. Ensure adequate ventilation around the units and avoid bundling power cables tightly.
- Kudzivirira Kukuvara: Always unplug power adapters by holding the plug itself, not by pulling the cable. Pulling by the cable can damage the internal wiring and expose live wires, leading to electrical shocks or burns.
9. Warranty uye Tsigiro
This StarTech.com product is backed by a 2-year warranty. Additionally, free lifetime 24/5 multi-lingual technical assistance is available.
For product support, technical assistance, or to access the latest drivers and manuals, please visit the official StarTech.com webwebhusaiti kana kuti taura nechikwata chavo chekutsigira:
- Websaiti: www.anokaramsey.edu
- Contact Information: Refer to the support section of the StarTech.com websaiti yeruzivo rwedunhu.





