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USB and Serial Connectivity

Digi offers a variety of serial-to-Ethernet products with our patented RealPort® COM/TTY redirector, the #1 selling serial card line in the world, and a full range of USB expansion options.

Serial Servers

  • Reliable, cost-effective serial-to-Ethernet connectivity
  • Standard, hardened/extended temperature, internal modem, wireless, industrial and customizable models
  • RS-232 and RS-232/422/485 serial models

Serial Cards

  • #1 selling serial card line in the world
  •  Highest level of OS support, port capacity, I/O performance, transmission distance, environmental tolerance and upgradeability
  •  High-performance, expandable, enhanced, standard and multi-modem models


  •  Easy COM port expansion for peripheral device connectivity
  •  External, USB Plug and Play alternative to PCI cards
  • 1, 2, 4, 8 or 16 ports with a variety of features and form factors


  • Network-enabled USB hub eliminates locally-attached host PCs
  • Utilizes RealPort® USB technology to connect USB devices anywhere on a TCP/IP LAN
  • 5 USB ports

USB PlusPower

  •  Compact hub solution with 4 USB PlusPower (powered USB) ports
  •  Eliminates individual power supply bricks for USB peripheral devices such as printers, signature capture devices and bar-code scanners
  •  Supplies power and communication signals over hot-pluggable USB cable

USB Dial-Up Remote Access

  •  Plug and Play solution adds 4 56K V.92 modems to a PC or server in minutes
  •  Gives network users access to ISP, fax and other dial-up applications supported by Windows

USB Hubs

  •  Industrial grade USB 2.0 hubs for instant USB expansion
  •  4 or 7 ports in a compact chassis
  •  Available in DC powered models and with locking power connectors

USB Software Stack for Windows NT

  • Enables developers, integrators and device manufacturers to add Windows NT support to USB devices for large-scale installations
  • First and only USB software stack for Windows NT that supports Microsoft® WDM driver architecture

Serial Servers

Digi's external serial servers provide full network connectivity to virtually any serial device. They include a reliable TCP/IP protocol stack, remote management capabilities, both serial and network interfaces, and Digi's patented RealPort® COM port redirector for a fully transparent COM or TTY connection.


PortServer® TS Family

 PortServer® TS

  •  Easy serial-to-Ethernet connectivity
  •  1, 2, 4, 8 or 16 serial ports (RJ-45)
  •  RS-232 only  

PortServer® TS MEI Hardened Family

  •  Hardened, rugged serial servers (models with NEMA TS 2 certification, Class 1 Div 2)
  •  Extended temperature tolerance for hazardous locations
  •  1, 2 or 4 switch selectable serial ports

PortServer® TS MEI

  • Supports all common electrical interfaces
  •  1, 2, 4, 8 or 16 serial ports (RJ-45)
  • RS-232/422/485 switch selectable

PortServer® TS M MEI

  • 1 internal modem port (RJ-45)
  • 1 or 3 serial ports (RJ-45)
  • Modem connection can act as backup during network failure

PortServer® TS P MEI

  • Supports powered Ethernet and powered serial
  • End-span and mid-span Power over Ethernet
  • 1, 2 or 4 serial ports (RJ-45)

PortServer® II

  • Expandable serial-to-network connectivity
  • 16 RS-232 serial ports
  • Add up to 64 ports with AccelePort XEM PORTS module

For more Digi product information, please click here.