• us 101 usb 1 port rs232 1mbaud
  • US 101 comes with USB extension cable
  • US 101 plugged into laptop through USB extension
  • US 101 with USB extension cable
  • US 101 RS 232 Pinout
  • US 101 alone
  • US 101 can attach directly to a USB port
us 101 usb 1 port rs232 1mbaud
  • 1 Port RS-232 USB to Serial Adapter
  • Data rate from 300 to 921,600 baud
  • Drivers for all popular operating systems including Windows 10, 8, 7 and XP
  • Works where many other USB to Serial devices do not
  • Includes 25cm USB Extender cable
  • Lifetime Warranty and Support
  • US-101-datasheet (1.31 MB)
Volume Purchase? Request a Quote

Request a Quote


USB to Serial adapter providing one RS232 serial port. Data transfer rates up to 921,600 baud rates and the 128 byte deep transmit and 256 byte receive FIFOS, coupled with 1Mbit line drivers deliver uncompromising performance on your laptop/PC. Drivers for Windows 32 bit and 64 bit Drivers for Windows 32 bit and 64 bit Operating Systems including Windows 10, Windows 8, Windows 7, Server 2008, Vista, Server 2003 and Windows XP with additional drivers for Raspberry Pi, Mac OS X and Linux. Lifetime warranty and support.

Customer Feedback

Product 3D Models

Operating Systems

Tech Spec

Serial Port
ConnectorDB9 Connector - 9 Pin Male
Tx FIFO Size128
Rx FIFO Size256
Operating DistanceEIA - RS232 Standard
CableUSB extender cable (0.25 metre ~ 1ft)
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-30 °C to +80 °C / -22 °F to +176 °F
Industrial StandardNo
Power Consumption40mA @ 5V
Product Weight0.023 kg, 0.81 ounces
Product Dimensions89x35x20 mm, 3.5x1.4x0.8 inches
Packaged Weight0.151 kg, 5.33 ounces
Packaged Dimensions160x135x49 mm, 6.3x5.3x1.9 inches
GTIN (barcode)837324002140
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 Server 2003 32 bit & 64 bit Editions
  • Windows XP 32 bit & 64 bit Editions
  • Linux
USB 2.0480 Mb/s USB 2.0 data rates.


Microsoft Signed Drivers

Microsoft Hardware




Typical Product Applications

Communicating with Industrial Equipment

  • For programming Siemens S5 PLC's
  • US-101 connects to Driver/Controller to enable configuration of Parker Compax Servo Drive/Controller
  • USB-Serial with industrial software requiring direct serial connection.
  • Communicate with serial devices PLC's, low frequency radio, HMI's control instrumentation
  • Some interface modules we use, need a serial port. A regular USB / RS-232 adapter just doesn't cut it.
  • To connect my laptop PC to industrial diagnostic equipment.
  • Industrial analysis and control of serial Comms
  • PC to Machine DNC via serial link. New PC has no serial ports so USB 2 COM3 is fine.
  • Connecting From a Windows XP PC to a Servo controller communicating at high speed.

Engine and Vehicle Diagnostics

  • Using as a direct USB to serial port connection for engine diagnostic tooling
  • For taking the capture file of Cummins engine data
  • PC connecting to in Insight Car Diagnostic Tool
  • To communicate with Cummins PowerGen products which require the use of an RS232 port

Configuring Networking devices

  • Network equipment such as managed switches
  • Connecting laptop to Cisco routers and switches, most of these routers and switches require a RS232 port for connecting to the console
  • Cisco Switch Configurations
  • Connecting my Mac to serial devices.
  • HP ProCurve Switches using Serial Console Cable
  • Juniper Networks FireWalls

Interfacing with AV and Home Automation

  • Audio visual engineer, control systems for Samsung screens and Orion video walls.
  • Automation Products
  • Communicating/Testing with AV devices
  • With an Hitachi Projector
  • Serial port from laptop to connect to NEC monitors, Smart projectors, controlling devices and controlling systems
  • Monitoring Clarks Heating Control System

Monitoring Medical Equipment

  • Medical Sterlisers with serial port
  • Provides RS232 connection to x-ray devices

Communication with Commercial & Scientific Equipment

  • Serial Communication port with ANABAT bat detector using a PC with no available RS232 port.
  • Connecting GPS to PC
  • Interfacing with a Davis Automatic Weather Station and Datalogger.
  • Serial port adapter for running scientific instruments.
  • To control serial based instrumentation equipment.
  • to talk to Suunto Zoop dive computers over rs232
  • As a serial connection for a scale to weigh our product hourly.
  • PFC Flight Simulator controls
  • DMM's (Digital MultiMeters)
  • Garmin Etrex GPS devices
  • Level Developments Inclinometer measuring slope of model railway track
  • Connect a touch screen PC to building management systems via USB serial connection.

Interfacing with Legacy Equipment

  • Access serial port from Lenovo thinkpad USB port
  • On a laptop that does not a have serial interface
  • Advanced graphic calculators from Texas Instruments
  • Match Netbook and serial interface