• us 159 isolated high retention usb 1 port rs232
  • US 159 front view
  • US 159 high retention usb
  • US 159 rotated view
  • US 159 with usb cable
  • US 159 with usb plugged in
us 159 isolated high retention usb 1 port rs232
  • 1 Port Isolated RS-232 USB to Serial Adapter
  • Isolation: Avoid electrical damage to your expensive equipment
  • High Retention USB connector with 50cm USB cable
  • Works where many other USB to Serial devices do not
  • Industrial Specification IP-50 rated -40 °C to +80 °C / -40 °F to +176 °F
  • Lifetime Warranty and Support
  • US-159-datasheet (1.35 MB)
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Tough ultra small isolated USB to serial adapter suitable for any environment. The closest you can get to an integrated serial port. High retention USB connector for an unbreakable connection.

Avoid electrical damage to your expensive equipment with isolation. Brainboxes US-159 is fully compliant with IEC 61000-4-2, meaning your equipment is immune to electrostatic discharge up to 8kV of contact discharge or 15kV of air discharge.

We provide our own software drivers - eliminating many common problems with USB to Serial - giving you have a reliable, stable, native com port solution.

Drivers for Windows 32 bit and 64 bit Operating Systems including Windows XP, Server 2003, Vista, Server 2008, Windows 7, Windows 8 and Windows 10 with additional drivers for Raspberry Pi, Mac OS X and Linux.

Customer Feedback

Product 3D Models

Operating Systems

Tech Spec

Serial Port
ConnectorDB9 Connector - 9 Pin Male
Tx FIFO Size512
Rx FIFO Size512
Operating DistanceEIA - RS232 Standard
CableUSB cable Type A to B (0.5 metre ~ 1.5ft)
Serial Port Settings
Max Baud Rate921,600
Data Bits7 or 8
ParityOdd, Even, None, Mark or Space
Stop Bits1 or 2
Tx/Rx ModesPoint to Point
PCB Layers4
Operating Temperature Range-40 °C to +80 °C / -40 °F to +176 °F
Industrial StandardYes
Power Consumption100mA @ 5V
Product Weight0.024 kg, 0.85 ounces
Product Dimensions42x41x22 mm, 1.7x1.6x0.9 inches
Packaged Weight0.155 kg, 5.47 ounces
Packaged Dimensions160x135x49 mm, 6.3x5.3x1.9 inches
GTIN (barcode)837324003802
Operating System Compatibility
Operating Systems
  • Microsoft Windows 10
  • Microsoft Windows 8 32 bit & 64 bit Editions
  • Raspberry Pi
  • Microsoft Windows 7 32 bit & 64 bit Editions
  • Windows Server 2008 32 bit & 64 bit Editions
  • Windows Vista 32 bit & 64 bit Editions
  • Mac OS X
  • Windows XP 32 bit & 64 bit Editions
  • Linux
USB 2.0480 Mb/s USB 2.0 data rates.


Microsoft Signed Drivers

Microsoft Hardware