1. Okwu mmalite
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. Ngwaahịa gafereview
Ihe ngwugwu 2.1
- 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)
- Akwụkwọ ntuziaka 1x (akwụkwọ a)

Image: All components included with the StarTech.com FD121-KVM-EXTENDER KVM Extender kit.
2.2 Atụmatụ
- 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 njirimara akụrụngwa

Foto: N'azụ view of the KVM Extender Transmitter (left) and Receiver (right) units, highlighting the Power, Link, Monitor, and Host (HID) ports.

Foto: N'ihu 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:
- Ntinye ike: Micro-B USB port for connecting the power adapter.
- Port njikọ: SFP+ slot for fiber optic cable connection.
- Port Monitor: 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).
- Ikanam ọnọdụ: Indicates power and link status.
- HID LED: Indicates USB HID activity.
3. Nhazi ntuziaka
Follow these steps to set up your StarTech.com KVM Extender:
- Gbanyụọ ngwaọrụ: 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.
- Jikọọ eriri Fiber optic:
- Insert the pre-installed SFP+ modules into the Njikọ ports on both the Transmitter and Receiver units.
- Connect a multi-mode fiber optic cable (not included) between the Njikọ port on the Transmitter and the Njikọ 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.
- Tinye Ike: Connect the provided power adapters to the Ike input ports on both the Transmitter and Receiver units, then plug the adapters into power outlets.
- Ike Na Ngwaọrụ: 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. Ntuziaka ọrụ
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. Nlekọta
To ensure the longevity and optimal performance of your KVM Extender:
- Keep the units in a clean, dust-free environment.
- Jiri ákwà dị nro ma kpọọ nkụ hichaa mpụta ya. Ejila ihe nhicha mmiri ma ọ bụ ihe mgbaze.
- Hụ na ikuku na-efe efe nke ọma gburugburu ngwaọrụ abụọ ahụ iji gbochie oke okpomọkụ.
- Na-elele njikọ eriri niile mgbe niile iji hụ na ha dị nchebe.
6. Nchọpụta nsogbu
If you encounter issues with your KVM Extender, refer to the following common troubleshooting steps:
6.1 No Video Display
- Lelee Ike: Ensure both the Transmitter and Receiver units are powered on and their Status LEDs are illuminated.
- Nyochaa njikọ eriri USB: 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.
- Ndakọrịta ngosi: Verify your display supports the resolution and refresh rate output by the source device.
- Mbipụta Isi Mmalite: Test the source device directly with the display to ensure it is outputting a signal.
6.2 No KVM Control (Keyboard/Mouse Not Responding)
- Lelee njikọ USB: 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.
- Magharịa: Try restarting the source computer and then the KVM Extender units.
6.3 Intermittent Signal
- Ogo USB: Use high-quality DisplayPort and fiber optic cables.
- Ogologo eriri USB: 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.
- Ike kwụsie ike: Ensure both units are receiving stable power.
7. Nkọwapụta
| Njirimara | Uru |
|---|---|
| Ụdị | StarTech |
| Nọmba nlereanya | FD121-KVM-EXTENDER |
| Ụdị njikọ | DisplayPort |
| Protocol Njikọta | Fiber optic |
| Mkpebi Max | 3840x2160 @ 60Hz (4K 60Hz) |
| Max Distance (Multi-Mode) | 984ft (300m) |
| Max Distance (Single-Mode) | 1,640ft (500m) (with optional SFP+ modules) |
| Ụkpụrụ vidiyo | Ihe ngosi DisplayPort 1.2 |
| Nkwado USB | USB HID (Keyboard, Mouse) |
| Ndakọrịta sistemụ arụmọrụ | OS Independent (Windows, macOS, Linux) |
| Akụkụ (L x W x H) | 4.5 x 3.1 x 1.1 sentimita (11.4 x 7.9 x 2.8 cm) |
| Ibu Ibu | 1.16 pound (0.53 n'arọ) |
| Ihe eji eme ụlọ | Igwe igwe |
| TAA kwadoro | Ee |
8. Ozi nchekwa
Biko gụọ ma soro ntuziaka nchekwa ndị a iji gbochie mmebi nke ngwaahịa ma ọ bụ imerụ onwe gị ahụ:

Image: Safety warnings and precautions for the KVM Extender.
- Ihe ize ndụ eletrik: 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.
- Heat Buildup: Overloaded or tightly bundled cables can overheat and pose a fire hazard. Ensure adequate ventilation around the units and avoid bundling power cables tightly.
- Mgbochi mmebi: 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. Akwụkwọ ikike na nkwado
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 website or contact their support team:
- Websaịtị: www.startech.com/support
- Ozi mkpọtụrụ: Refer to the support section of the StarTech.com websaịtị maka nkọwa kọntaktị mpaghara.