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The SeaLINK+232I is a rugged USB-to-RS-232 serial adapter designed with electrical isolation to protect against ground loops and surges. It offers one isolated serial port with data rates up to 460.8K bps, ideal for connecting legacy RS-232 equipment to modern USB-only computers. Powered directly via USB and fully plug-and-play, this adapter combines convenience, safety, and long-term reliability for industrial and commercial use..
The SeaLINK+232I offers a secure and efficient way to add an isolated RS-232 port to USB-equipped PCs and industrial systems. With its electrical isolation, it safeguards connected devices and hosts from harmful surges and voltage differences — especially important in field service, manufacturing, and test environments. The unit is powered through the USB bus, eliminating the need for external adapters or complex wiring. Setup is effortless thanks to SeaCOM driver support for Windows and Linux, which automatically maps the device as a standard COM port. Reliable, compact, and ready for harsh environments, the SeaLINK+232I is built to keep legacy equipment running safely.
Single isolated RS-232 port via USB
Electrical isolation prevents ground loop and surge damage
Data rates up to 460.8K bps
USB-powered — no external power supply required
Fully compliant with USB 1.1, compatible with USB 2.0
SeaCOM drivers for Windows and Linux simplify installation
High-retention USB connection for secure interface
Durable DB25M connector and industrial-grade housing
| Parameter | Value |
|---|---|
| Model | SeaLINK+232I (2103) |
| Host Interface | USB |
| Serial Interface | RS-232 (Isolated) |
| Max Data Rate | 460.8K bps |
| Max Data Distance | 50 feet |
| Isolation | Yes |
| Power Requirement | +5V @ 100mA (via USB) |
| USB Powered | Yes |
| USB Specification | USB 1.1 Compliant; USB 2.0 Compatible |
| Serial Connector | DB25 Male |
| Communication Chip | USB/UART |
| Operating Temperature | 0°C to 70°C (32°F to 158°F) |
| Storage Temperature | 0°C to 70°C (32°F to 158°F) |
| Humidity Range | 10–90% RH, Non-Condensing |
| Dimensions | 3.8" × 2.3" × 1.0" (9.66 × 5.84 × 2.54 cm) |
| Operating Systems | Windows, Linux |
| Software Included | SeaCOM USB drivers and utilities |
| Product Family | SeaLINK |
| High Retention USB | Yes |