① Story Start: Where Did the Customer’s Voice Come From
Chris is an IT professional who relies heavily on multi-device workflows. While building a new workstation, he purchased the HDK404-P23-USBK for his Dell Precision and Lenovo Legion.
But right after the first connection, he reported to us through a ticket:
• All USB peripherals could not be recognized
• The audio interface was completely non-functional
• Even regular USB flash drives did not respond
For him, this was not a “minor lag” but a complete shutdown of his entire workstation.
② Real Confusion: Why Isn’t This Just a Simple “Device Failure”
Chris’s work depends on seamless switching of peripherals between multiple computers.
Complete USB failure means:
• His workflow is forcibly interrupted
• Multi-device switching becomes meaningless
• The newly purchased KVM becomes totally unusable
What worried him the most was that he didn’t know whether the issue came from the KVM, the computer, or his specialized peripherals.
③ Our Judgment Process: From Routine Inspection to a “Strange Detail” That Shifted the Direction
After receiving the ticket, Kelly suggested he upgrade the firmware according to standard procedure.
But after the upgrade, the issue remained, which indicated:
• It was not a firmware bug
• Nor was it a simple compatibility exception
We began reviewing the device list Chris provided.
And there, one detail made us pause:
He was using a Dell special keyboard with a smart card reader.
Kelly proposed a new hypothesis:
“This type of keyboard might reverse-power the USB interface, causing port damage.”
This assumption went completely beyond conventional thinking and made us realize for the first time that we might be dealing with a “physical-level conflict” rather than a software compatibility issue.
④ Action and Change: The Customer’s Voice Drives Real Product Improvement
After confirming the direction, we took two parallel actions:
• To ensure Chris could resume work immediately, we arranged to send a replacement unit right away
• We formed an internal team to acquire the same Dell keyboard for verification based on Chris’s feedback
Once the R&D team obtained the device, they discovered abnormal current behavior.
For this reason, we developed a compatibility firmware specifically for this keyboard, allowing it to coexist safely and stably with the KVM.
⑤ Customer Feedback
After receiving the new device and switching to a regular keyboard, Chris’s system fully returned to normal:
“Very good, I am very satisfied. Kelly is very enthusiastic... In addition, TESmart even found the Dell keyboard that I had a problem with and updated the firmware to make it compatible.”
⑥ Conclusion: How We Became Different Because of This Customer
Chris made us realize:
Compatibility depends not only on adapting to common devices, but also on handling “unconventional combinations” in real user scenarios.
Therefore, we added the following to our knowledge base:
• Risk warnings for special USB peripherals
• Reverse power detection steps
• Special compatibility testing procedures for abnormal devices
These updates came from Chris and will serve every professional user with similar needs.
