USB Device Not Recognized? Troubleshooting USB Extenders and KVM Systems
A USB device may work normally when connected directly to a computer but stop working after a USB extender or KVM system is added.
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The SC&T DP01F-4K6G is a professional SFP+ fiber KVM DisplayPort extender delivering uncompressed, zero-latency 4K60Hz video up to 20km. It provides total EMI immunity and signal integrity, ensuring responsive, real-time remote control for PCs and DVRs. The system features a selectable control link, allowing users to transmit either USB 1.1, RS232, or IR signals based on project requirements., making it ideal for mission-critical industrial and government applications.
Delivers bit-for-bit DisplayPort 1.2 signals (4K60Hz) without any data compression or processing lag, ensuring a real-time viewing and control experience.
Fiber optic transmission is completely unaffected by electrical noise and RF interference, providing the highest level of stability in harsh industrial sites.
Comes with a standard 20km SFP+ module, or a 300m SFP+ module, with the flexibility to support even longer distances through optional high-capacity modules.
Features a switchable design to transmit either USB 1.1 (KVM), RS232, or Bi-directional IR over a single fiber link. Set the signal through DIP switch.
Designed for high-security and high-stability environments such as military, medical, and industrial command centers.
Max. Video Resolution: 4K60Hz
Max. Transmission Distance: 20km over SFP+ Single-Mode Fiber Optic, 300m over SFP+ Multi-Mode (Up to 60km with optional modules)
Video Input: 1 x DisplayPort 1.2
Video Output: 1 x DisplayPort 1.2
Control Signal: Selectable: USB 1.1 / RS232 / Bi-directional IR
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A: No. The HE01F-4K6G transmits the raw DisplayPort 1.2 signal without any compression, preserving 100% of the visual data and ensuring zero latency.
A: No. The device utilizes a selectable control link. Users must use the slide switch to select one signal type (USB 1.1, RS232, or IR) to transmit.
A: The USB 1.1 port is optimized for HID (Human Interface Devices) such as standard keyboards and mice. It does not support high-bandwidth devices like webcams or external storage that require USB 2.0/3.0 speeds.
A: Yes. While the standard SFP+ module supports up to 20km, the distance can be extended (e.g., up to 60km) by using different SFP+ modules and compatible fiber cabling.
A: Yes. It is fully compliant with DisplayPort 1.2 standards, supporting HDR and HDCP 2.2 for compatibility with modern 4K content.
A: Fiber optics overcome the 100m distance limit of copper and provide total electrical isolation, protecting equipment from ground loops and electrical interference.
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1. All specifications are subject to change without notice.
2. Brand and product names mentioned are trademarks of their respective companies.
3. The terms HDMI, HDMI High-Definition Multimedia Interface, HDMI Trade dress and the HDMI Logos are trademarks or registered trademarks of HDMI Licensing Administrator, Inc.
