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Home USB Communications USB to Serial Converters

USB to Serial Converters

Connect RS-232 serial devices to USB ports with a USB to serial adapter. We carry all types of USB to RS-232 converter models including ruggedized, in-line, panel mount, isolated, multi-port, single port, and more.
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USR602
Heavy Duty, Isolated USB to RS-232/422/485 2 Port Converter (USB cable included)
  1. USB-Serial conversion; add 2 or 4 serial ports to your PC
  2. 2 kV isolation; 8 kV contact, 15 kV air ESD protection
  3. 921.6 kbps data rate
  4. -40 to +80 °C wide operating temperature
  5. High retention USB port and rugged metal case (DIN rail or panel mount)
  6. Redundant Power Inputs (terminal block, locking barrel plug)
  7. UL Class 1/Division 2

$357.41

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USR604
Heavy Duty, Isolated USB to RS-232/422/485 4 Port Converter (USB cable included)
  1. USB-Serial conversion; add 2 or 4 serial ports to your PC
  2. 2 kV port-to-port isolation; 8 kV contact, 15 kV air ESD protection
  3. 921.6 kbps data rate
  4. -40 to +80 °C wide operating temperature
  5. High retention USB connector and rugged metal case (DIN rail or panel mount)
  6. Redundant power inputs (terminal block, locking barrel plug)
  7. UL Class 1/Division 2

$547.96

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USOPTL4
Isolated High Retention USB to RS-422/485 Converter (USB cable included)
  1. USB-Serial conversion; Adds a COM port to your PC
  2. 2000 V RMS optical isolation; 15kV surge protection
  3. 460.8 kbps data rate
  4. Quick, easy in-line installation
  5. No power supply required (powered from USB bus)
  6. High Retention USB Ports

$125.66

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USOPTL4-LS
Isolated RS-422/485 High Retention USB Converter - Locked Serial Number
  1. USB-Serial conversion; Adds a COM port to your PC
  2. 2000 V RMS optical isolation; 15kV surge suppression
  3. 460.8 kbps data rate
  4. Quick, easy in-line installation
  5. Powered by USB port - no power supply needed
  6. High retention USB port
  7. Locked Serial Number

$125.66

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USPTL4
RS-422/485 Inline USB Converter - non-isolated
  1. Adds a COM Port to Your PC
  2. 15KV ESD Surge Protection
  3. High Retention USB Port
  4. USB 1.0, 1.1 and 2.0 Compatible (12 Mbps)
  5. LEDs for Transmit and Receive Data Lines
  6. No power supply required (powered from USB bus)

$79.31

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USPTL4-LS
RS-422/485 Inline USB Converter - non-isolated, Locked Serial Number
  1. 2000 V RMS Optical Isolation (isolated Models)
  2. Adds a COM Port to Your PC
  3. Locked Serial Number option (-LS models)
  4. LEDs for Transmit and Receive Data Lines
  5. USB 1.0, 1.1 and 2.0 Compatible (12 Mbps)
  6. High Retention USB Port
  7. Powered by USB Port

$79.31

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USOPTL4DR
USB to RS-422/485 Converter - 1 port, isolated, DIN mount (USB cable included)
  1. USB-serial conversion; Adds a COM port to your PC
  2. 3000 Volts optical isolation; 15 kV ESD protection
  3. RS-422/485 data rates up to 921.6 Kbps
  4. DIN rail mount (panel mount option)
  5. USB bus powered - no power supply required
  6. High retention USB connector
  7. Removable terminal block

$146.26

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USOPTL4DR-2
USB to RS-422/485 Converter, 2 port, isolated, DIN mount (USB cable included)
  1. USB-Serial conversion; Adds a COM port to your PC
  2. 3000 Volts optical isolation; 15 kV ESD protection
  3. RS-422/485 data rates up to 921.6 Kbps
  4. DIN rail mount (panel mount option)
  5. USB bus powered - no power supply required
  6. High retention USB port
  7. Removable terminal blocks

$210.12

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USOPTL4DR-LS
USB to RS-422/485 Converter - 1 port, isolated, locked serial number, DIN mount (USB cable included)
  1. USB-serial conversion; Adds a COM port to your PC
  2. 3000 Volts optical isolation; 15 kV ESD protection
  3. RS-422/485 data rates up to 921.6 Kbps
  4. Locked serial number feature
  5. DIN rail mount (panel mount option)
  6. USB bus powered - no power supply required
  7. Removable terminal block

$147.29

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USOPTL4-4P
Isolated USB 4-port to RS-422/RS-485 Converter
  1. Connect Multiple RS-422/485 Devices to Your USB Port
  2. 2000 V RMS Port-to-Port Optical Isolation
  3. 15 KV ESD Surge Protection
  4. USB Port Powered or External Power
  5. Supports USB 2.0 (backward compatible)
  6. High-Retention USB Port Connectors Ensure Reliable Connection
  7. RS-422/485 Data Rates Up to 921.6 kbps
  8. LEDs Indicate Data Flow on Serial Ports
  9. Removable Terminal Blocks on Serial Ports Make Wiring Easy
  10. Automatic Configuration on Windows 2000, XP, Vista, 7 (32/64 bit)

$315.18

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USO9ML2-2P
Isolated USB 2-Port to RS-232 Converter
  1. Connects Multiple RS-232 Devices to Your USB Port
  2. 2000 V RMS Optical Isolation; 15 KV ESD Surge Protection
  3. RS-232 Data Rates up to 460.8 kbps
  4. Desk, panel mount, flanges attached
  5. FCC, CE UL approvals
  6. USB Port Powered or External Power Supply
  7. High Retention USB Port Ensures Reliable Connections
  8. Supports USB 2.0 (backward compatible)
  9. LEDs Indicate Data Flow on RS-232 Ports
  10. One USB cable included

$210.12

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USO9ML2-LS
Isolated USB to RS-232 Converter - Locked Serial Number
  1. 2 kV Isolation
  2. ESD Protection - 4 kV Contact, 8 kV Air
  3. Locked Serial Number
  4. Compact In-Line Case
  5. USB 2.0 Full Speed Compatible (12 Mbps)
  6. RS-232 Data Rates Up to 460.8 Kbps
  7. USB Bus Powered

$135.96

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USO9ML4
USB to RS-422/485 DB9 Inline Converter
  1. Adds a COM Port to Your PC
  2. USB High Retention Connector Type B
  3. USB 2.0 Full Speed Compatible (12 Mbps)
  4. USB Bus Powered (<100mA)
  5. DB9 Male RS-422/485 Connector
  6. Automatic Send Data Control
  7. Compact In-Line Case

$125.66

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USO9ML2-4P
Isolated USB 4-Port to RS-232 Converter
  1. Connects Multiple RS-232 Devices to Your USB Port
  2. 2000 V RMS Optical Isolation; 15 KV ESD Surge Protection
  3. RS-232 Data Rates up to 460.8 kbps
  4. Desk, panel mount, flanges attached
  5. FCC, CE UL approvals
  6. USB Port Powered or External Power Supply
  7. High Retention USB Port Ensures Reliable Connections
  8. Supports USB 2.0 (backward compatible)
  9. LEDs Indicate Data Flow on RS-232 Ports
  10. One USB cable included

$315.18

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232USB9M
USB to RS-232 DB9 Miniature Converter
  1. Connect RS-232 devices to your USB port
  2. RS-232 data rates up to 921.6 Kbps
  3. In-line installation
  4. FCC, CE approved
  5. USB port powered
  6. (1) USB cable included
  7. USB 2.0 (12 Mbps) compatible
  8. Perfect for Field Service Applications

$73.13

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232USB9M-LS
USB to RS-232 DB9 Miniature Converter - Locked Serial Number
  1. Connect RS-232 devices to your USB port
  2. RS-232 data rates up to 921.6 Kbps
  3. In-line installation
  4. USB port powered
  5. Locked serial number feature
  6. (1) USB cable included
  7. FCC, CE approved
  8. USB 2.0 (12 Mbps) compatible
  9. Perfect for field service applications

$73.13

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485USB9F-2W
USB to RS-485 2-Wire Miniature Converter
  1. Connect RS-485 devices to your USB port
  2. Perfect for Field Service Applications
  3. Small – Fits easily into any laptop bag
  4. USB port-powered
  5. USB 2.0 (12 Mbps) compatible
  6. RS-485 data rates up to 921.6 Kbps
  7. Supports Windows XP, 7 (32/64 bit), 8 (32/64 bit), 8.1 (32/64 bit), 10 (32/64bit)

$93.73

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485USB9F-2W-LS
USB to RS-485 2-Wire Miniature Converter - Locked Serial Number
  1. Connect RS-485 devices to your USB port
  2. Locked Serial Number versions
  3. Perfect for field service applications
  4. Small – fits easily into any laptop bag
  5. USB port powered
  6. USB 2.0 (12 Mbps) compatible
  7. RS-485 data rates up to 921.6 kbps
  8. Supports Windows XP, 7 (32/64 bit), 8 (32/64 bit), 8.1 (32/64 bit), 10 (32/64bit)

$93.73

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485USB9F-4W
USB to RS-485 4-Wire Miniature Converter
  1. Connect RS-485 devices to your USB port
  2. Perfect for field service applications
  3. Small – fits easily into any laptop bag
  4. USB port powered
  5. USB 2.0 (12 Mbps) compatible
  6. RS-485 data rates up to 921.6 kbps
  7. Supports Windows XP, 7 (32/64 bit), 8 (32/64 bit), 8.1 (32/64 bit), 10 (32/64bit)

$93.73

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USB-4604B-BE
4-port RS-232 Serial to USB Converter
  1. Full compliance with USB V1.1 and V2.0 specifications.
  2. RS-232 port supported
  3. Transmission speed up to 921.6 kbps
  4. Bus-powered; no need for external power supply
  5. Plug & Play installation
  6. No additional IRQs or I/O ports required
  7. Hot swap function support

$211.15

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