USBGear Mini DB9 to 5-Pin Terminal Block Passive Adapter - RS232 / RS422 / RS485 Serial Converter with Screw Terminals for Industrial Use

Compact DB9-Female to Terminal Block Adapter

The iSerial-TB5 offers a passive and portable RS232/422/485 conversion solution with a micro-sized DB9-Female to 5-pin Terminal Block design. Ideal for industrial environments requiring secure and compact serial signal conversions, it allows for straightforward integration without the need for bulky converters.

Industrial Signal Flexibility

This adapter supports 2-wire and 4-wire RS485, as well as RS232 and RS422 configurations, giving you the flexibility to match your setups communication protocol. Whether you're wiring for full duplex RS422 or half/full duplex RS485, the iSerial-TB5 covers your needs efficiently.

Durable and User-Friendly

Built for industrial standards, the screw-type 3.5mm pitch terminal block ensures a secure and vibration-resistant connection. The compact design makes it easy to deploy in tight spaces or portable applications where space and reliability are top priorities.

Plug-and-Play Integration

No drivers or external power are required. Simply connect the DB9-Female (DCE) port to your system and the terminal block to your wiring. Compatible with Windows 11 and prior, Mac OS X, and Linux systems for seamless operation.

Key Features:

• Micro-Sized Design: Extremely compact for easy portability and installation in tight spaces.


• Versatile Interface Support: Supports RS232, RS422, 2-wire RS485, and 4-wire RS485 modes.


• Secure Terminal Block: 5-pin, 3.5mm screw-type terminal block ensures robust, industrial-grade connections.


• Standard DB9-Female Port: Built-in DCE-style DB9 for direct serial communication.


• Passive Operation: No power or drivers required for use.


• Broad OS Compatibility: Works with Windows XP through 11, Mac OS X, and Linux.

Perfect for:

• Factory Automation: Connecting RS485/422 equipment in industrial control systems.


• Test Labs: Quick signal wiring for diagnostic or engineering test setups.


• Field Service Kits: Compact tool for portable RS422/485 communication needs.


• IoT Integration: Simple serial conversion for embedded or edge device connections.