PCI RS-232, RS-485 Serial Interface (RJ45)

Part: 7405   Model: POS+4.PCI

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The POS+4.PCI serial interface provides four selectable RS-232 or two-wire RS-485 serial ports for demanding Point of Sale applications. Connect all of your Point of Sale devices via the onboard RJ45 modular connectors to simplify cabling requirements.

The POS+4.PCI provides either fused +5V or +12V on pin 5 of the RJ45 connector suitable for powering a variety of POS peripherals including cash drawers and displays.


Additional information

Communications Chip


Electrical Interface

RS-232, RS-485

Humidity Range

10 – 90% Relative Humidity, Non-Condensing

Host Interface(s)


Max Data Distance

4000 feet

Max Data Rate

460.8K bps

Operating Temperature

0°C to 70°C (32°F to 158°F)

PC Bracket

Standard Height

# of Ports


Serial Connector(s)


Storage Temperature

-50°C to 105°C (-58°F to 221°F)

UART Series

850 UART

Each port individually configurable for RS-232 or two-wire RS-485
16C864 buffered UART with 128-byte FIFOs
Data rates to 921.6K bps
Universal Bus (3.3V and 5V) compatible
Automatic RS-485 enable/disable
Four RJ45 connectors
Power (+5V or +12V) provided on pin 5 of each connector
Ideal for point of sale applications

Windows Software

Software: SeaCOM - Windows

Linux Software

Software: SeaCOM - Linux


Datasheet: 7405


Manual: 7405


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