FarSync Flex USB X.25 Synchronous Adapter
FarSite announces the FarSync Flex, the worlds first USB Synchronous line adapter. FarSite have developed a USB connected synchronous serial adapter supporting X.21, RS530, V.35, RS449 and RS232C network interfaces operating at serial line speeds up to 2 Mbits/s. The device is believed to be the only USB Synchronous Serial line adapter available. No external power supply is required as the device is powered from the USB connection. USB 2.0 and older USB 1.1 host interfaces are supported.
FarSync Flex X25 - Key Features: X.21, RS530, V.35, RS449 and RS232C network interfaces, drivers for Linux and Windows, NDIS and SDCI Windows API, Raw sockets Linux API, TCP/IP over PPP, USB line powered, Toolkit available for using the API, Line signal modes: NRZ, NRZI, FM0 and FM1, Selectable synchronous or asynchronous, 2 Mbits/s, internal and external clocking, USB 2.0 and 1.1. X.25 and ISO transport protocol handlers for Windows and Linux, IP over X.25, X.25 Developers Toolkit. Sockets and Java API to the protocol handlers.
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| Part Number and Description | Price | Add to Cart |
| F-FS6100 FarSync Flex USB Sync/Async/X.25 Adapter with Linux and Windows X.25 SDK and Drivers | $1,260.00 | |
| OPTIONAL ACCESSORIES | ||
| F-FS9507 FarSync Flex SDK for Linux Raw Sockets API and Low Level Windows SDCI | $390.00 | |
| F-FS9504 FarSync X.25 High Capacity Pack for Windows for T1U, T2U, T4U | $900.00 | ![]() |
| F-FS9505 FarSync X.25 High Capacity Pack for Linux for T1U, T2U, T4U | $900.00 | ![]() |
| AVAILABLE CABLES | ||
| F-FS6011-KCR1 Single RS232C (v.24, X.21bis) and RS530 (EIA530) cable 1.5M | $58.00 | |
| F-FS6062-UCX1 Single X.21 (V.11, RS422) cable 1.5M | $54.00 | |
| F-FS6063-UCV1 Single V.35 cable 1.5M | $68.00 | |
| F-FS6019-KC449 Single RS449 cable 1.5M | $74.00 | |
| F-FS6016-KCR-MON Monitor Cable RS232C (v.24, X.21bis) with DB25M to DB25F passthrough 1.5M | $144.00 | |
| F-FS6017-KCX-MON Monitor Cable X.21 (V.11, RS422) with DB15M to DB15F passthrough 1.5M | $144.00 | |
Features and Specifications

- Download a PDF full data sheet for this device
- Features
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- FarSync five year limited warranty
- See either the FarSite W3 Page or PDF datasheet for both hardware and operating system specific features for this device
Support
Data Sheet for this device
FarSync W3 Page for this device
FarSite Cable Compatibility Tables, Diagrams and Adapter Jumper Settings
FarSite direct support page this device
Status of FarSync products operation on Vista- FarSite has a press release regarding that status of their product line with Vista.



