 Convert a USB port into up to 16 serial ports
 USB Serial Adapters / USB Serial Converters
(RS-232/RS-422/RS-485)
• Links to the USB serial adapters with pricing are at the bottom of this page.
Our USB serial port adapters convert a USB port into 1, 2, 4, 8 or 16 serial ports capable of speeds up to 921,600 bps (many of the adapters top out at 230,400 bps. The adapters which support up to 921,600 bps will indicate so in the product description).
These USB Serial Adapters and USB serial cables are designed to make serial port expansion quick and simple. Connecting to a USB port on your computer or USB hub, the USB to Serial Adapters instantly add serial communication ports to your system. By taking advantage of the USB bus, the USB Serial Adapter makes it easier than ever to add serial ports and serial devices to your system with easy plug-and-play and hot plug features. When you plug the USB Serial Port Converter into the USB port, the USB serial converter is automatically detected. There are no IRQ & COM port conflicts since the USB to serial port cable doesn't require any additional IRQ, DMA, or memory as resources on the system.
The USB Serial Port Converter provides instant connectivity with modems, ISDN TAs, PDS, handheld & pocket PCs, digital cameras, POS, serial printers, etc. It is suitable for remote access, retail and industrial applications, data collection and other applications requiring a high speed serial communications port.
Please note that all of our USB to serial port adapters and USB to serial port cables are supported by Windows Vista!
Features & Specifications:
- Easy plug-and-play installation
- Installed as a standard COM port
- Full modem control signals & data signals supported
- Serial port speed up to 230,400 bps or 921,600 bps depending on the model.
- 384 byte receive / 128 byte transmit buffering.
- USB cable included
The USB-COM series items support Windows 98, ME, 2000, XP, Vista, Apple MAC OS8 or higher, Linux 2.6.31 and later, OpenBSD 2.9 and later & FreeBSD 4.7 and later on most of the USB-COM series adapters (exceptions, which require FreeBSD 6.0 or later are the USB-2COM, USB-2COMi, USB-4COMi-SI, USB-8COMi-RM, and USB-16COM-RM. These devices use a later chip (the FT2232C) which isn't supported by FreeBSD versions before 6.0). Drivers for the Windows operating systems are included on a CD-ROM disc. The latest versions of the Windows drivers as well as the drivers for Apple OS8/OS9/OSX, & Windows CE.NET (version 4.2 or greater) can be downloaded from http://www.ftdichip.com/Drivers/VCP.htm.
Please click the corresponding link below to view the USB Serial Adapters you are interested in.
Please note that the standard type of serial port is RS-232, which would require a USB RS232 adapter. RS-422/RS-485 ports are generally used in industrial applications. Those needing RS422 serial ports/RS485 serial ports probably know it, and are familiar with USB RS422 and USB RS485 adapters.
 1 port RS-232 USB serial adapters (9-pin).
1 port RS-232 USB serial adapters (25-pin).
2 port RS-232 USB serial adapters (9-pin).
4 port RS-232 USB serial adapters (9-pin).
8 port RS-232 USB serial adapters (9-pin).
16 port RS-232 USB serial adapters (9-pin).
1 port RS-422/RS-485 USB serial adapters (9-pin).
2 port RS-422/RS-485 USB serial adapters (9-pin).
4 port RS-422/RS-485 USB serial adapters (9-pin).
8 port RS-422/RS-485 USB serial adapters (9-pin).
1 serial DB9 (9-pin male) RS-232, 1 parallel DB25 (25-pin female), 2 PS/2, 1 file transfer port, 1 ethernet & 2 USB ports adapter.
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