Elecbee USB-A to RS232 DB9 Male Serial Adapter Cable 1m with DB9 Female to DB25 Male Adapter

Elecbee 1m USB-A to RS232 Serial Adapter Cable with DB25 Adapter

The Elecbee USB-to-RS232 adapter set provides an active serial connection between a compatible computer USB-A port and legacy RS232 equipment. It includes an approximately 1m USB-A to DB9 male converter cable and a separate DB9 female to DB25 male adapter.

The supplier-specified single-chip ASIC converts USB communication into serial data. After compatible driver installation, the converter can provide a virtual COM-port connection for supported serial communication software.

Technical Specifications

Product Type: USB-to-RS232 serial converter set
Computer Connector: USB-A male
Cable Serial Connector: DB9 male
Included Adapter Input: DB9 female
Included Adapter Output: DB25 male
Communication Standard: RS232
USB Interface: USB 1.1
Cable Length: Approximately 1m
Conversion Architecture: Single-chip ASIC
Exact Chipset: Not specified
Maximum Serial Baud Rate: Not specified
Operating-System Support: Not specified

USB-to-RS232 Conversion

The integrated ASIC converts USB data into RS232 serial communication. When the appropriate driver is installed, the operating system may assign a virtual COM-port number for use by compatible serial applications.

The chipset model has not been supplied, so driver compatibility must be determined from the actual hardware identification. Do not assume PL2303, CH340, FTDI or another specific chipset based only on the enclosure appearance.

Communication Settings: Configure the baud rate, data bits, parity, stop bits and flow-control mode according to the connected equipment. The adapter does not automatically determine all device settings.

1m Cable Length

The converter cable measures approximately 1m, providing practical reach between a computer and nearby RS232 equipment. Route the cable away from sharp edges, excessive tension and sources of strong electrical interference.

USB 1.1 Interface

The supplier specifies a USB 1.1 interface. This identifies the USB-side standard and does not specify the maximum RS232 baud rate.

Actual serial performance depends on the ASIC converter, installed driver, computer configuration, COM-port settings and connected equipment. No specific baud-rate range is provided in the available product information.

DB9 to DB25 Serial Adapter

The included adapter connects to the cable’s DB9 male end and provides a DB25 male connector for compatible RS232 equipment. It changes the connector format but does not convert RS232 into another communication protocol.

Pinout Verification: DB9-to-DB25 wiring can differ among DTE, DCE, straight-through and null-modem applications. The adapter pin mapping is not supplied and must be checked against the equipment documentation.

Serial-Port Warning: DB25 connectors are also used for parallel printer interfaces and proprietary equipment ports. Do not connect the adapter unless the DB25 port is confirmed as compatible RS232 serial.

Driver and Hot-Plug Operation

Plug-and-play operation depends on whether the computer already contains a compatible driver for the installed ASIC. Manual driver installation may be required before the converter appears as a COM port.

The USB connection supports supplier-stated hot-plug operation. Close active serial software and stop data transfer before disconnecting the cable to reduce the risk of interrupted communication or application-data errors.

Compatible Applications

The adapter set can be used with compatible miniature telephones, digital cameras, external modems, ISDN terminal adapters and other legacy equipment that communicates through an RS232 serial interface.

Compatibility requires a supported driver, matching connector gender, compatible DTE or DCE arrangement, correct pin assignment and matching serial communication settings.

Connection Instructions

For DB9 Equipment:
1. Identify and install the driver required by the converter chipset.
2. Connect the USB-A plug to the computer.
3. Connect the DB9 male plug to a compatible DB9 female RS232 port.
4. Select the assigned COM port and configure the serial parameters.

For DB25 Equipment:
1. Confirm that the DB25 equipment port is an RS232 serial interface.
2. Connect the cable’s DB9 male plug to the adapter’s DB9 female side.
3. Connect the DB25 male end to a compatible DB25 female serial port.
4. Verify the pin mapping before transmitting data.

Important Compatibility Notes

Package Contents:
1 × 1m USB-A to DB9 Male RS232 Serial Converter Cable
1 × DB9 Female to DB25 Male Serial Adapter