In-line USB to Serial Converters

€112.60 ex.VAT

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In-line USB to Serial Converters

USO9ML2 USB To Isolated RS-232 DB9M  €112.60 

USO9ML2-LS USB To Isolated RS-232 DB9M - Locked Serial #  €109.32 

Compact & Field Service Friendly 

These compact, isolated USB to RS-232 converters allow you to add an asynchronous serial port to your USB only PC. The built in 2 kV isolation protects your port from dangerous ground loops. They are perfect for connecting to remote devices or programming ports in field service applications. They are USB 2.0 compatible. 

Model USO9ML2 is the RS-232 version and supports hand shake signals as well as data at speeds up to 460.8 Kbps.

If you don’t need isolation, use model USPTL4. Windows operating systems up to Windows 8 (32 and 64 bit) are supported.

Connect to Asynchronous Serial Diagnostic & Programming Ports with your USB only PC 

To better support field service pools, we created "LS" versions of these popular converters. Simply put, "LS" stands for "Locked Serial Number." Units that are programmed with the "locked serial number" are field service friendly in that they all share the same serial number. 

This feature allows for a single driver installation - if you plug another "LS" version of the same model number into your PC, it will be assigned to the same COM port. With the standard version each time you install a product with the same model number, you must go through the driver installation and it will be assigned to a unique COM port.


Operating System Support for all models: Windows 2000, XP (32 / 64 bit), Vista (32 / 64 bit), Windows 7 (32 / 64 bit), Windows 8 (32/64 bit), 2003 and 2008 Server (32 / 64 bit).


Operating Temperature: 0 to 70 C

Isolation: 2 kV

Power: USB Bus Powered (less than 100 mA)
USB Connector: Type B
RS-232 Connector: DB9 Male
RS-232 Signals: TD, RD, RTS, CTS, DTR, DSR, DCD, GND
Data Rate: 460.8 Kbps
USB Compatibility: USB 2.0 at 12 Mbps
Emissions: FCC Class B, CISPR Class B (EN55022)
CE: Light Industrial EN61000-6-1