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SEALEVEL | USB Serial Adapters

SeaI/O-641U-OEM

Now includes NABL Calibration Certificate.
Rs. 43180.00

The Sealevel 641U-OEM SeaI/O adapter is a compact USB to RS-232 solution tailored for OEM systems such as ITX, EBX, EPIC, and ATX platforms. With four RJ45 ports, high-speed UARTs, and robust power flexibility, it’s designed for seamless legacy device integration with modern embedded applications..

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  • Detail
  • Special Features
  • Specification

The Sealevel 641U-OEM USB-to-serial adapter offers embedded designers a dependable way to add four RS-232 ports to any OEM platform. With support for legacy software via standard COM port recognition, it bridges the gap between modern USB-based systems and traditional serial communication needs.
Each port includes LED indicators for transmit and receive activity, and the unit’s state-machine design allows efficient communication over multiple ports with minimal CPU overhead.
Designed for field flexibility, it is powered via an external 9–30VDC input and offers a fused power connection on pin 5 of each RJ45 port for downstream serial peripherals.
Expansion is easy via an RS-485 passthrough that supports chaining up to 246 SeaI/O N-series boards, offering a wide range of I/O capabilities like relay outputs, isolated inputs, A/D, and D/A functions.

  1. 4-port RS-232 interface for OEM platforms

  2. RJ45 connectors with integrated Tx/Rx activity LEDs

  3. USB 1.1 compliant and USB 2.0 compatible

  4. Supports up to 921.6K bps data rate

  5. Powered via 9–30VDC terminal block or barrel connector

  6. High-retention USB Type B for secure connectivity

  7. RS-485 pass-through for up to 246 SeaI/O expansion boards

  8. Uses efficient state-machine architecture for reduced CPU load

  9. Includes 72" USB A-to-B cable and metal mounting standoffs

  10. RoHS and WEEE compliant

Parameter Value
Model SeaI/O 641U-OEM
Host Interface USB
Number of Ports 4
Serial Interface RS-232
Serial Connector(s) RJ45
Max Data Rate 921.6K bps
Max Data Distance 50 feet
Power Requirement 9–30VDC @ 1.5W
USB Powered No (external supply required)
USB Specification USB 1.1 Compliant; USB 2.0 Compatible
Dimensions 7.5" (L) x 5.0" (W) x 0.8" (H)
Operating Temperature 0°C to 70°C (32°F to 158°F)
Storage Temperature -50°C to 105°C (-58°F to 221°F)
Humidity Range 10–90% Relative Humidity, Non-Condensing
Communication Chip USB/UART
High Retention USB Yes
OEM Compatibility Yes
Included Accessories 72" USB A-to-B cable (CA179), 4 metal standoffs + nuts
Product Family SeaI/O