LornCeng
LornCeng DVI KVM USB Extender Over Fiber 4K@30Hz EMI Immunity Up to 20km (12.4 Miles)
Bottom line: The DVI KVM USB Extender Over Fiber 4K@30Hz EMI Immunity Up to 20km is a specs-and-price decision rather than a crowd-consensus one in the kvm switches category, priced around $259.99 on Amazon as of 2026-10-07. Check the specification table below against one or two close alternatives — on price and spec fit, not on star ratings.
As an Amazon Associate, SpecPicks earns from qualifying purchases. Full disclosure →
*Price sourced from Amazon.com. Last updated 2026-10-07. Price and availability subject to change.
Pros & Cons
Pros
- ✓ Backed by LornCeng's warranty and support channels
Cons
- ✗ Check the listed dimensions, connectors and platform compatibility against your setup before ordering
- ✗ Price, stock, shipping and returns are set by the retailer and may have changed since this page was last updated
SpecPicks Verdict
SpecPicks scored DVI KVM USB Extender Over Fiber 4K@30Hz EMI Immunity Up to 20km using a rating × review-volume × price-fit model applied to published specs and reviews across the kvm switches category. LornCeng's kvm switches lineup sits within the broader category mid-tier; price and specs are the deciding factors over brand loyalty here. Judge it on the specification table and the price rather than on sentiment: check the figures that decide your use case, then put it side-by-side with two or three close alternatives in the Compare tool before clicking through.
Common buyer scenarios for kvm switches of this kind: matching it to an existing build, replacing a failing part, or upgrading from a previous-generation equivalent. Check the spec table below against your current setup — particularly socket / form-factor / power-rating fields — and confirm compatibility on the retailer's listing before purchase. Prices and stock are set by the retailer and may have moved since this page was last updated.
Key Features
- Up to 20km (12.4 miles) over a single LC single‑mode fiber cable. Unlike copper extenders, our fiber solution maintains pure 4K video and USB 2.0 signals with zero degradation, no electromagnetic interference, and virtually no latency – perfect for campuses, data centers, and industrial sites
- It is plug‑and‑play – no drivers, no software, no network configuration. The transmitter and receiver auto‑pair as soon as they are powered on. Works with Windows, macOS, Linux, and any other OS that supports standard USB and DVI
- You can connect a keyboard, mouse, USB flash drive, printer, touchscreen, camera, or card reader. The extender transparently passes USB signals from your local console to the remote computer as if they were plugged in directly. All 4 ports are USB 2.0 (up to 480 Mbps)
- It transmits audio via the DVI channel (if your source supports DVI audio) or a dedicated 3.5mm jack. It also includes RS232 and IR pass‑through for controlling industrial equipment, PTZ cameras, projectors, or set‑top boxes
- Data centers, command centers, medical imaging, broadcast, home office. Unlike copper KVMs (max 400 ft), fiber provides 20 km range, zero latency, uncompressed 4K, and EMI immunity.
Full Specifications
| Brand | LornCeng |
|---|---|
| Color | Black |
| Material | Metal |
| Unit Count | 1.0 Count |
| Part Number | LC-UVO-3DUAS01 |
| Switch Type | Push Button |
| Circuit Type | 4-way |
| Connectivity | USB |
| Contact Type | Normally Open |
| Control Type | remote |
| Actuator Type | Push Button |
| Compatibility | Mac, Linux |
| Material Type | Metal |
| Mounting Type | Surface Mount |
| Connector Type | 3.5mm Audio, DVI, Lc Fiber, Rs232, Usb2.0 |
| Control Method | Remote |
| Operation Mode | Plug & Pluy |
| Item Dimensions | 5.16 x 3.66 x 1.26 inches |
| Number of Items | 1 |
| Contact Material | Metal |
| Full listing title | DVI KVM USB Extender Over Fiber 4K@30Hz EMI Immunity Up to 20km (12.4 Miles), Remote Keyboard & Mouse, EDID, RS232, IR, Zero Latency |
Ready to buy?
DVI KVM USB Extender Over Fiber 4K@30Hz EMI Immunity Up to 20km (12.4 Miles), Remote Keyboard & Mouse, EDID, RS232, IR, Zero Latency is listed on Amazon. Price, availability, shipping and returns are set by Amazon and its sellers — check the listing for current terms. SpecPicks earns a small commission on qualifying purchases — thank you for supporting independent review work.
*Price sourced from Amazon.com. Last updated 2026-10-07. Price and availability subject to change.
Related KVM Switches
More guides & deep dives from the SpecPicks archive
Browse all articles & guides →- RTX 4070 Super vs RX 7800 XT — Which to Buy in 2026
- The Complete Voodoo5 5500 AGP Driver Guide (2026 Edition)
- Best 1440p Gaming GPUs in 2026
- Best Retro Handhelds in 2026 — From $35 to $500
- Best Budget Gaming PC Build 2026 — ~$1,000 ($800 on Sale)
- Emulation Hardware in 2026: FPGA, Software, and Cart-Reader Ecosystems
- How to Build a Windows 98 Retro PC in 2026
More reviews from the SpecPicks archive
Browse all reviews →- Best Storage Upgrades for a Legacy or Retro PC in 2026
- Best Budget GPU for Running Llama 70B Locally: RTX 3060 12GB Stacked
- vLLM on a Single RTX 3060 12GB: Batched Serving Numbers and When It's Worth It (2026)
- 768GB Intel Optane DIMMs Running a 1-Trillion-Parameter LLM: How the Build Actually Works
- Best SATA SSD for a PS4 Upgrade in 2026: BX500 vs 870 EVO vs WD Blue
- Gemma-4-Harmonia-31B Heretic: What the Uncensored Merge Adds Over Base Gemma 4
- Best Starter Kit for Learning Robotics on Raspberry Pi (2026)
- AVX-512 Software RAID on AMD Ryzen: Up to 41% Faster Linux md-RAID
- Best DualSense and PC-Compatible Controller (2026)
- RTX A6000 48GB vs RTX 3090 24GB for Production LLM Inference (2026)
- Best Budget SSDs for Retro and Homelab Builds in 2026
- Is the RTX 3060 12GB Still Worth It for 1080p Gaming in 2026?
- Best SATA SSD for Boot Drive Upgrades on Aging Desktops (2026)
- AI Bug-Hunting Exploded: Run a Local Vuln-Scanner LLM on 12GB VRAM
- Building a Period-Correct 2003 WinXP Gaming Rig with Sound Blaster Audigy and a Modern 8BitDo Controller
- MSI Raider 16 Max HX Review: Elite Gaming and Creator Power
- Cyberdeck Raspberry Pi 4/5 Mini Music Workstation Build Guide
- Old Massive Chieftec Full Tower: Homelab Gem or Junk?
- Best Streaming Setup Gear for Beginners in 2026
- Kimi K2.7 Code on an RTX 3060 12GB: Can a $300 GPU Run It?
- GLM-5.2 Local: What GPU Actually Runs the Top Open-Weights LLM
- Local AI on a Raspberry Pi in 2026: What Actually Runs (and What Doesn't)
- GLM-5.2 With CPU Offload: Ryzen 7 5800X + RTX 3060 12GB Tested
- Dual Radeon AI PRO R9700 Workstation: 64 GB Local LLM Build
Earliest SpecPicks reviews
Browse full archive →- Best GPU for Llama 3.1 8B (2026)
- Best GPU for Qwen 3 14B (2026)
- Best GPU for Qwen 3 32B (2026)
- Best GPU for Llama 3.1 70B (2026)
- Best GPU for DeepSeek-R1 32B (2026)
- Best GPU for Llama 3.1 405B (2026)
- How to run Llama 3.1 8B on NVIDIA GeForce RTX 5090
- How to run Qwen 3 14B on NVIDIA GeForce RTX 5090
- How to run Qwen 3 32B on NVIDIA GeForce RTX 5090
- How to run Llama 3.1 70B on NVIDIA GeForce RTX 5090
- How to run DeepSeek-R1 32B on NVIDIA GeForce RTX 5090
- How to run Llama 3.1 8B on NVIDIA GeForce RTX 4090