Cause: The data-sensing circuitry failed, or you are using bidirectional printing (e.g., scanning + printing).
Solution: Use manual mode via the button. Or, if the driver utility provides a “Force Auto-Sense” option, enable it. For bidirectional devices, consider a network print server instead of a USB switch.
An “auto-sharing” USB switch allows two computers to share one USB printer. When Computer A sends a print job, the switch detects activity and automatically connects the printer to Computer A. After a period of inactivity, it may switch back to Computer B if both are waiting. Manual buttons override this. Cause: The data-sensing circuitry failed, or you are
1. Look for a brand and model number on the device label.
Typical format: USB200, US202, GUS402, etc. StarTech’s USB2PRINT switches are purely hardware-based
2. For driverless switches → No download needed; just connect, select active port (button or auto mode), and the printer will work. the voltage drops
3. If a utility is needed (rare for USB 2.0 models):
StarTech’s USB2PRINT switches are purely hardware-based. No driver is required for switching. But for their auto models (e.g., USB2PS2AUTO), a small “Port Selector” tool is available.
Fix: Auto-switches use voltage sensing. If your printer goes into "power save" mode, the voltage drops, and the switch may think the computer disconnected. Fix by disabling power saving on your printer or using manual mode.