Elecbee CH398 Engineering-Grade CH340C+213 USB 2.0 to RS232 Adapter Cable, USB-A Male to DB9 Male 1M

Elecbee CH398 Engineering-Grade USB-to-RS232 Adapter Cable

The Elecbee CH398 is an active USB 2.0-to-RS232 serial adapter cable for programming, configuring and communicating with compatible industrial equipment. It connects a USB Type-A host to equipment fitted with a DB9 female RS232 port.

The engineering-grade version combines a CH340C+213 dual-chip architecture, supplier-specified baud rates from 300bps to 921600bps, RS232-level output and a multilayer shielded cable structure.

Technical Specifications

Brand: Elecbee
Model: CH398
Version: Engineering Grade
Product Type: Active USB-to-RS232 serial converter cable
USB Bridge: CH340C
Companion Device: Supplier-identified 213-marked component
Architecture: Dual-chip conversion design
Host Interface: USB 2.0
USB Connector: USB Type-A male
Serial Connector: DB9 9-pin male
Connector Retention: DB9 fixing screws
Serial Output Level: RS232
Supplier-Specified Baud Rate: 300–921600bps
Driver: CH340-family driver or compatible OS-provided support
Supplier-Listed Systems: Windows 11/10/8.1/7/XP, macOS and Linux
Conductors: Copper core
Shielding: Aluminum foil and tinned-copper braid
Reinforcement: Four internal tensile cords
Housing: Double-injection-molded construction

Version Note: “Engineering Grade” is the supplier’s version designation. It should not be interpreted as an independently verified industrial certification or environmental rating.

CH340C+213 Dual-Chip Conversion

The CH340C converts the host’s USB communication into UART serial data. A separate companion stage is required to translate the UART signals into the positive and negative voltage levels used by an RS232 interface.

The supplier identifies the conversion solution as CH340C+213. Because the complete part number and manufacturer of the 213-marked component are not supplied, this listing does not assign additional electrical specifications to that device.

Electrical-Level Warning: The DB9 connector provides RS232-level output. It must not be connected directly to a TTL UART input unless a suitable RS232-to-TTL converter is installed.

300–921600bps Serial Data Rate

The cable supports a supplier-specified serial baud-rate range from 300bps to 921600bps. Lower rates accommodate compatible legacy equipment, while higher rates can be used when both the connected device and application support them.

The host software normally configures the required baud rate through the serial driver. The target equipment must be configured with matching baud rate, data bits, parity, stop bits and flow-control settings.

No Automatic Baud Guarantee: The available technical information does not establish independent automatic baud-rate detection. Select the correct rate in the applicable programming or communication software.

No Direction-Control Requirement: Standard RS232 uses separate transmit and receive signal paths. Automatic transmit/receive direction switching should not be advertised as a core RS232 function.

USB-A and DB9 Male Interfaces

Host Connector: USB 2.0 Type-A male
Equipment Connector: DB9 9-pin male with retaining screws

The DB9 male connector mates with compatible equipment using a DB9 female RS232 port. Tighten the retaining screws carefully to reduce accidental disconnection.

DB9 connector gender does not determine the pinout. Confirm whether the equipment uses a DTE or DCE arrangement and whether the application requires straight-through or null-modem wiring.

Hardware handshake lines such as RTS, CTS, DTR and DSR are not confirmed in the supplied specifications. Verify the required pin connections before purchase.

Multilayer Shielded Cable Structure

The cable structure includes copper conductors, an inner jacket, aluminum-foil shielding and tinned-copper braided shielding. Four internal reinforcing cords add tensile support, while double-injection-molded housings protect the connector entry points.

The combined shielding is intended to reduce exposure to electromagnetic interference in electrically active environments. It does not guarantee error-free communication under every installation condition.

For improved signal integrity, separate the adapter cable from mains wiring, high-current conductors, motor cables and variable-frequency-drive outputs.

Driver and System Compatibility

The CH398 requires CH340-compatible driver support. Some operating systems may include a suitable driver, while others may require manual installation.

The supplier lists Windows 11, Windows 10, Windows 8.1, Windows 7, Windows XP, macOS and Linux. Actual support depends on the exact operating-system version, architecture, security policy and available CH340 driver.

After installation, confirm that the adapter appears as a serial or virtual COM port. Select the assigned port in the applicable programming, terminal or device-configuration software.

Compatible Applications

The CH398 can be used with compatible PLC programmers, human-machine interfaces, electronic scales, LED displays, CNC machines, temperature controllers, industrial computers, control equipment and instruments fitted with a suitable DB9 female RS232 port.

The cable supplies the serial interface only. Device-specific programming software, communication protocols, project files and configuration instructions are not included.

Installation Instructions

Step 1: Obtain the appropriate CH340-family driver for the host operating system.
Step 2: Install the driver if the operating system does not already provide compatible support.
Step 3: Connect the USB Type-A plug and identify the assigned serial port.
Step 4: Confirm DB9 gender, pinout and RS232 voltage compatibility.
Step 5: Connect the DB9 male plug to the compatible equipment and secure the screws.
Step 6: Configure the correct baud rate, data bits, parity, stop bits and flow control.
Step 7: Test communication before beginning programming or equipment control.

Package Contents: 1 × Elecbee CH398 Engineering-Grade USB-A Male to DB9 Male RS232 Adapter Cable