Before connecting. The driver must be installed first. After successful installation, connect the 308 device; the system will then automatically recognize and configure it.
The CipherLab 308 converter is primarily based on the chipset.
The "308" designation refers to the specific controller housed within the cable that translates RS232 serial signals to USB.
Once connected, the hardware should be recognized as "CIPHERLAB 308 USB-to-RS-232 Interface Converter" and "CP210x USB Composite Device". Common Issues: Unknown Device: cipherlab 308 usb-to-rs232 interface converter driver
When the 308 device is connected to a computer for the first time, the system recognizes it as two distinct hardware components: “CIPHERLAB 308 USB-to-RS-232 Interface Converter” and “CP210x USB Composite Device”. This dual recognition occurs because the 308 uses a Silicon Labs CP210x series chipset to perform the USB-to-serial conversion. The CP210x chip requires a Virtual COM Port (VCP) driver to create a software-based serial port (e.g., COM3, COM4) that allows the operating system to communicate with the attached scanner as if it were connected via a traditional RS232 port.
If you are using scanner software, it must be configured to the same COM port number shown in the Device Manager. Key Features of the CipherLab 308 Converter
Download the latest Silicon Labs VCOM or CP210x driver suitable for your Windows OS. Before connecting
The is a hardware adapter used to connect RS-232 serial devices—such as older CipherLab barcode scanners or mobile computers—to a modern computer via a USB port. This device functions as a Virtual COM Port , meaning that once the driver is installed, the operating system treats the USB connection as a standard serial (COM) port. Driver Specifications
If the official site is inaccessible, the driver can often be found through reliable driver repositories that host Silicon Labs-based drivers (which the 308 often uses), such as: DriverIdentifier - CipherLab 308 Driver
Common issues with the CipherLab 308 USB-to-RS232 interface converter driver may include: The CipherLab 308 converter is primarily based on
Note the specific assigned (e.g., COM4). This value must be matched identically within your POS or data-harvesting software configurations. Advanced Troubleshooting & Configuration
USB Type-A (compatible with USB 1.1 and USB 2.0 standards).
Without the proper driver, your computer will not recognize the converter, or it will appear as an unknown device in the Device Manager. The driver establishes the necessary "Virtual COM Port" that maps the USB hardware to a software serial port (e.g., COM3) that your scanner software can recognize.
Frank opened Device Manager. Under “Other Devices,” a small yellow triangle screamed. “Unknown Device.”
Some legacy POS (Point of Sale) or inventory management software applications can only read lower COM ports (like COM1 or COM2 ). If Windows assigned your driver to a high number like COM12 , you can manually change it: