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Roalan Ltd is the source for professional computer adapter products.

Serial Comms Cards 

PCI-X 3.3V (3.3 Volt) 64 bit and PCI serial 1 to 8 port serial communication adapter cards/boards including  low profile half height

Intelligent Serial Cards

4 to 128  Port  Intelligent Serial RS232 RS422 RS485 

Parallel Printer Cards

PCI-X 3.3V (3.3 Volt) 64 bit and PCIe Express parallel printer adapter cards/boards including low profile half height

Serial plus Parallel Combo

PCI Express (PCIe) and  PCI-X 133MHz 64bit Dual Serial RS232 and Parallel Adapter                     

Gigabit Ethernet Cards

PCI-X 3.3V (3.3 Volt) 64 bit Network Gigabit Ethernet cards/boards. PCI-Express Gigabit adapter 

Multi-Modem Cards

PCI/PCI-X 3.3V (3.3 Volt) 64 bit Multi- Modem Adapter cards/boards

RS422 RS485 Cards

PCI/PCI-X 3.3V (3.3 Volt) 64 Bit RS422 RS485 Serial Comms cards/boards

PCI to USB Cards 

PCI to USB V2.0 Adapter cards

USB to Serial converters

USB to Serial RS232 RS422/485 1 to 16 Port Adapters

USB to Infra Red

USB to Infra Red (IR) Converter

USB to PCMCIA

USB Adapter for Cardbus Wireless Modem 3G Cards

USB 3G Modem

USB to 3G Wireless Modem

ExpressCard to Serial

ExpressCard to Serial RS232 Card

PC Card  to Serial 

PCMCIA Cardbus to Serial RS232  Adapter Cards

PC Card  to Parallel 

PCMCIA Cardbus to Parallel Printer and Dongle Cards

PC Card to Serial RS422/485

PCMCIA Cardbus to Serial RS422 RS485 Adapter Cards

ExpressCard to Serial

PCMCIA ExpressCard to Serial RS232

ExpressCard To PCMCIA Adapter

Converts ExpressCard slot to PCMCIA CardBus PC Card

PCI/PCI-X Firewire Cards

PCI PCI-X 64 bit 3.3V (3.3 Volt) to Firewire (IEEE1394) low profile half height  adapter cards/boards,

Ethernet to Serial

Ethernet to Serial RS232 RS422 RS485 1 to 8 Port Adapters

Serial to Bluetooth

Bluetooth to Serial RS232 Cable Eliminator 

Wireless Network-based Serial Device Server

Wireless LAN IEE802.1b to RS232 RS422 RS485 Serial Adapters

GSM to Serial

Mobile Cell Phone to Serial RS232

Quatech Products

Order Quatech products on-line

VSCom Products

Order VScom products on-line

Synchronous Products

PCMCIA RS232/422/485

PCI Modem

3GWireless Cellular Router

Compact Flash

Compact Flash To Serial Comms RS232/422/485

CardBus to ExpressCard

PCMCIA CardBus to ExpressCard Adapter

PCI Express SATA

PCIe SATA RAID Controller

 

 


USB to Serial RS422/485 Converters

These adapters enable you to add serial COM RS422/485 ports to your PC Workstation or Embedded System, providing the ability to communicate between USB (Universal Serial Bus) and serial peripherals.
They add Windows serial COM-ports via USB connection and are compatible with new Windows OS and legacy RS422/485 devices.
This plug and play USB solution is perfect for mobile instrumentation and applications requiring many RS422/485 devices. USB plug and play allows easy serial port expansion that requires no IRQ, DMA or I/O port resources. Users no longer need to power down the system and open the case, saving time and costs.

USB-S422 USB to Serial RS422/485 Communication Converter 1X 9 pin male connector

One RS422/485 port male DB9 connector
Speed up to 921.6K bps
Signals: RS422: TxD+/-, RxD+/-, RTS+/-, CTS+/-, GND RS485: Data+/-, GND
USB bus powered, no external power supply
Windows 98, ME, 2000, XP, 2003 Server, Vista
Linux (Kernel 2.4 and up built-in)

USB-S422 Buy Me £35.00 (About US$71)

USB-S422I USB to Serial RS422/485 Opto-Isolated and Surge Protected Communication Converter 1X 9 pin male connector

One galvanically opto-isolated RS422/485 port male DB9 connector
2KV isolation
Speed up to 921.6K bps
Signals: RS422: TxD+/-, RxD+/-, RTS+/-, CTS+/-, GND RS485: Data+/-, GND
USB bus powered, no external power supply
Windows 98, ME, 2000, XP, 2003 Server, Vista
Linux (Kernel 2.4 and up built-in)
0 to 60oC
3 year warranty

USB-S422I Buy Me £59.00 (About US$120)

USB 2COM-I-M  USB to Dual Serial RS422/485Communication Converter 2 X 9 pin male Connectors

Two  RS422/485 port male DB9 connectors
Speed up to 921.6K bps
Signals: RS422: TxD+/-, RxD+/-, RTS+/-, CTS+/-, GND RS485: Data+/-, GND
USB bus powered, no external power supply
Windows 98, ME, 2000, XP, 2003 Server, Vista
Linux (Kernel 2.4 and up built-in)
0 to 60oC
3 year warranty

USB 2COM-I-M Buy Me £59.00 (About US$120)

USB 2COM-I-SI-M  USB to Dual Serial RS422/485 Opto-Isolated and Surge Protected Communication Converter 2 X 9 pin male Connectors

Two  galvanically  opto-isolated RS422/485 port male DB9 connectors
2KV isolation
15KV surge protection
Speed up to 921.6K bps
Signals: RS422: TxD+/-, RxD+/-, RTS+/-, CTS+/-, GND RS485: Data+/-, GND
USB bus powered, no external power supply
Windows 98, ME, 2000, XP, 2003 Server, Vista
Linux (Kernel 2.4 and up built-in)
0 to 60oC
3 year warranty

 USB 2COM-I-SI-M Buy Me (About US$0)

USB 4COM-I-M   USB to Quad  Serial RS422/485Communication Converter 4 X 9 pin male Connectors

Four RS422/485 port male DB9 connectors
Speed up to 921.6K bps
Signals: RS422: TxD+/-, RxD+/-, RTS+/-, CTS+/-, GND RS485: Data+/-, GND
USB bus powered, no external power supply
Windows 98, ME, 2000, XP, 2003 Server, Vista
Linux (Kernel 2.4 and up built-in)
0 to 60oC
3 year warranty

USB 4COM-I-M Buy Me £95.00 (About US$193)

USB 4COM-I-SI-M  USB to Four Serial RS422/485 Opto-Isolated and Surge Protected Communication Converter 4 X 9 pin male Connectors

Four galvanically  opto-isolated RS422/485 port male DB9 connectors
2KV isolation
15KV surge protection
Speed up to 921.6K bps
Signals: RS422: TxD+/-, RxD+/-, RTS+/-, CTS+/-, GND RS485: Data+/-, GND
USB bus powered, no external power supply
Windows 98, ME, 2000, XP, 2003 Server, Vista
Linux (Kernel 2.4 and up built-in)

USB 4COM-I-SI-M Buy Me £175.00 (About US$356)

USB 8COMI-RM   USB to Quad  Serial RS422/485Communication Converter 8 X 9 pin male Connectors

Eight RS422/485 port male DB9 connectors
Speed up to 921.6K bps
Signals: RS422: TxD+/-, RxD+/-, RTS+/-, CTS+/-, GND RS485: Data+/-, GND
USB bus powered, no external power supply
Windows 98, ME, 2000, XP, 2003 Server, Vista
Linux (Kernel 2.4 and up built-in)
0 to 60oC
3 year warranty

USB 8COM-I-RM Buy Me £235.00 (About US$478)

 

 
Roalan delivers products worldwide.
VAT will be added to all UK and EU (without a VAT number) deliveries

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                    Tel +44 (0) 1202 861512

                    Fax +44 (0) 1202 861732

                    Gleneagles House, 31 Riverside Road, West Moors, BH22 0LG, UK

                    Registered in England  4591605   VAT GB 474 4377 22     Member 1408917

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