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When
you buy from
Roalan you will be treated well, you will get a
high-quality product which will not cost you a fortune. And you will get more
satisfaction out of your purchase than you expected.
Quad Honestrum.
Join our Many satisfied customers
all over the world.
You don't have to buy online.
Just call us on +44 (0)1202 861512 to discuss your application.
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Available Products:
PCI
Parallel
PCI-X Parallel
PCI Express
Parallel
PCI Serial
PCI-X Serial
PCI Express Serial
USB to
Industrial
Serial RS232/422 Converters
Ethernet to Serial Servers
WLAN to Serial Servers
ModBus Network Gateways
ExpressCard to
Seria, Firewire, LAN and Serial
ExpressCard to PCMCIA CardBus
Embedded CPU ARM Modules
GSM Phone Switch
USB to GSM 3G Modem
Multi-Modems
Bluetooth to Serial
PCIe Expansion Box
PCI Gigabit Cards
PCMCIA Card Readers
PCI Express Card
Reader
PCI Firewire Cards
Serial to CAN Adapter
USB to CAN Adapter
Network to CAN adapter
PCMCIA Serial
and Parallel Cards
PCMCIA
Synchronous Serial Cards
GPRS
Cellular Serial Modem
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USB to Serial RS232 1 to 4 Port Converters
These industrial converters enable you to add serial COM ports to your PC Workstation or
Embedded System, providing the ability to communicate between USB and serial peripherals.
They add Windows serial COM-ports via USB connection and are compatible with new
Windows OS and legacy RS232 devices.
This plug and play USB solution is perfect for mobile instrumentation and
applications requiring many RS232 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 4COM-M USB to 4 Port Industrial Serial RS232
communication
Converter 4 X 9 pin male connectors
The high speed serial port with the 128 byte FIFO
allow high speed communication, even in heavy loaded systems. Unique features
reduce the system load. The serial port also allows unusual speed settings like
500.000bps.
 | Adds 4 serial RS232 communication ports via USB connection. |
 | Easy serial communication port expansion with plug&play. |
 | Requires no IRQ, DMA, I/O port. |
 | Eliminates IRQ conflict and reserves system resources |
 | Installed as standard Windows Com port |
 | Compatible with new & legacy RS-232 devices |
 | Serial RS232 communication port speed up to 500K bps |
 | Full RS-232 modem control signals RS-232 data signals: TxD, RxD, RTS, CTS,
DSR, DTR, DCD, RI, GND RS-232 Connectors: four DB9 male connectors |
 | Serial RS232 communication port is individually configurable |
 | Adds more ports conveniently as needs grow |
 | USB Powered, no external power supply |
 | Windows 7 32/64, 98, ME, 2000, XP, 2003 Server, Vista 32/64 Linux (Kernel 2.4 and up built-in) |
 | 3 year warranty |
 | Operating temperature range 0 to 60oC |
 | Dimensions 172X95X29mm (W×L×H) 184X99X29mm with DB9 |
USB 4COM-M


USB 4COM-PRO USB to 4 Port Industrial Serial RS232/422/485
communication
Converter 4 X 9 pin male connectors
The USB-4COM-PRO is completely jumper-less and free of DIP
switches, all configuration is done by software. Just press the button and use
the configuration program.
Serial ports on USB allow further use of existing devices, even when the
computer doesn't offer serial ports. Now the USB-4COM-PRO is extremely flexible
in offered communication standards. Besides the classical RS232 and RS422 it
offers six variants of the RS485 operation. The often required Termination and
Polarization (BIAS) is also provided by built-in hardware, and it is controlled
by the same configuration software.
The USB 2.0 interface enables the high speed serial ports (max. 3Mbps, 128 byte
FIFO) for high speed communication, even in heavy loaded systems. Unique
features reduce the system load. The serial ports also allow unusual speed
settings like 500kbps.
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Serial interface
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RS232/422/485 selected by software
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Ports
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Four
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Speed
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up to 500kbps RS232, up to 3Mbps RS422/RS485
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Available Modes
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RS232 full duplex
RS422 full duplex
RS485 4 wire, full duplex
RS485 2 wire, half duplex, with echo
RS485 2 wire, half duplex, without echo
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Signals
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RS232 TxD, RxD, RTS/CTS, DTR, DSR, DCD, RI, GND
RS422 Tx+/-, Rx+/-, GND
RS485 2 wire Data+/-, GND
RS485 4 wire Tx+/-, Rx+/-, GND
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USB Interface
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USB2.0
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Power
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External power supply 5V DC
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Driver
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Windows 7 32/64, 98, ME, 2000, XP, 2003 Server, Vista
Linux (Kernel 2.4 and up built-in)
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Connectors
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four DB9 male
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Dimensions
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172×95×29 mm³ (W×L×H)
184×99×29 mm³ with DB9 connector and ears
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Product Name
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VScom USB-4COM-PRO
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Packing list
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VScom USB-4COM-PRO Converter
USB cable 0,9m
Power converter
CD, English Documentation
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DK-35A
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DIN-Rail mounting kit
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USB 4COM-PRO
DK-35A

Customer
Reviews
USB-S USB to Serial RS232 Communication Converter/Adapter
9 pin male connectors
USB to Serial providing one RS232 serial
port. Up to 500,000 data transfer rates and the 128 byte deep FIFOS,
gives uncompromising performance on your laptop/PC. Drivers for Windows 32
bit and 64 bit Operating Systems including Windows XP, Server 2003, Vista,
Server 2008 and Windows 7.
 | Adds a serial RS232 ports via USB connection. |
 | Suitable for Chip and Pin Terminals. |
 | Easy serial communication port expansion with plug&play. |
 | Requires no IRQ, DMA, I/O port. |
 | Eliminates IRQ conflict and reserves system resources |
 | Installed as standard Windows Com port |
 | Compatible with new & legacy RS-232 devices |
 | Serial communication port speed up to 500K bps |
 | Full RS-232 modem control signals RS-232 data signals: TxD, RxD, RTS, CTS,
DSR, DTR, DCD, RI, GND RS-232 |
 | Serial RS232 communication port is individually configurable |
 | Adds more ports conveniently as needs grow |
 | Bus-powered. |
 | Windows 7 32/64, 98, ME, 2000, XP, 2000 to 2008 Server, Vista 32/64 Linux (Kernel 2.4 and up built-in) |
 | No external power supply needed
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 | EMC and FCC and EC Class A |
 | RoHS |
 | Operating temperature range 0 to 60oC |
 | 3 year warranty |
USB-S


USB-DS USB to 2 Serial RS232
Communication Converter/Adapter 2 X 9 pin
male connectors
The serial port also allows unusual speed
settings like 500.000bps.
 | Adds 2 serial RS232 ports via USB connection. |
 | Suitable for Chip and Pin Terminals. |
 | Easy serial communication port expansion with plug&play. |
 | Requires no IRQ, DMA, I/O port. |
 | Eliminates IRQ conflict and reserves system resources |
 | Installed as standard Windows Com port |
 | Compatible with new & legacy RS-232 devices |
 | Serial communication port speed up to 500K bps |
 | Full RS-232 modem control signals RS-232 data signals: TxD, RxD, RTS, CTS,
DSR, DTR, DCD, RI, GND RS-232 |
 | Serial RS232 communication port is individually configurable |
 | Adds more ports conveniently as needs grow |
 | Bus-powered. |
 | Windows 7 32/64, 98, ME, 2000, XP, 2003 Server, Vista 32/64 Linux (Kernel 2.4 and up built-in) |
 | No external power supply needed
|
 | Operating temperature range 0 to 60oC |
 | 3 year warranty |
USB-DS

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