IBD183
USER GUIDE (Version: 1.0)
EXAR XR21V1412
Mini PCI-E Serial Ports Adaptor Card
Connectors Pin Definition
CN1: COM1 for RS422/485 interface
Matching connector: Molex P/N 51021-0500
Pin #
Signal Name
1 TX
2 TX_N
3 RX
4 RX_N
5 GND, ground
CN2: COM2 Serial Ports
Matching connector: Molex P/N 51021-0900
Pin #
Signal Name
1 DCD, Data carrier detect
2 RXD, Receive data
3 CTS, Clear to send
4 GND, ground
5 TXD, Transmit data
6 RTS, Request to send
7 DSR, Data set ready
8 DTR, Data terminal ready
9 RI, Ring indicator
Switch Settings:
SW1
1 2 3 4
RS-422 off off on on
RS-485 on on on on
SW2
1 2 3 4
RS-422 off on off on
RS-485 on off on off
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IBD183 Mechanical Drawing
Cable Mechanical
Drawing
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Mini PCI-E Serial Ports Driver Installation
1. In the Windows OS, go to the Computer Management (Device Manager)
screen. In the ‘Other devices’ as shown, right click “USB Device”.
5. Choose “search” and “installation” options, click the checkbox of
“Include this location in the search”, and click Browse to find the driver’s
path in the CD provided or enter the path directly - \SCSI\IBD183\Windows
XP\x86
2. In the PCI Serial Port Properties screen, click Reinstall Driver.
3. In the Hardware Update Wizard screen, select “No, not this time” and click
Next to continue.
4. Select “Install from a list or specific location (Advanced), and click Next to
continue.
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6. Click Finish to close the wizard.
7. There are four serial ports. Therefore, the Hardware Update Wizard procedure
will be repeated for the other serial port.
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