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Product Name Serial Card (PCI Express)
Model Multi-4/LPCIe RS232
Series Serial Card
Product Description

– 4 ports serial communication card
– Supports PCI Express Base Specification v1.1 and v2.0
– The world’s leading 256 byte FIFO
– Communication speed: Up to 921.6kbps
– ±15kV Surge protection



The Multi-4/LPCIe is equipped with SystemBase’s powerful semiconductor, SB16C1058PCI and PCIe to PCI bridge chip to deliver speed and performance up to 921.6kbps with 256 bytes FIFO to preventing overrun errors. Combine that with the need of fewer components and you get cost-effective and reliable connections to your serial devices. The Multi-port boards support widely used, Windows and Linux operating systems and include 15,000 volt surge suppression. The Multi-4/LPCIe can be attached to 8 ports panel with DE-09 (DB-9) connectors which is available in two models, RS232 and RS422/RS485. These boards are ideal for POS, hospital, factory automation and building automation and many other applications.

Connector Panel:

The Multi-4/LPCIe consists of a low profile communication card and connector panel with support for either RS232 or RS422/RS485. The connector panel has 8 DE-09S (DB-9 female) connectors to protect against the pins being electrically shorted. LEDs next to each connector provide visual communication status of the ports. It is constructed of aluminium and is suitable for industrial environments.

Slew-Rate Limit Control

The Multi-4/LPCIe is equipped with Slew Rate Limit Control and when enabled, it minimizes EMI emissions which may cause data transmission errors. When Slew Rate is used maximum communication speed is 250Kbps. This function is recommended in many medical applications.


SystemBase PCI Express Multi-4/LPCIe RS232


SystemBase PCI Express Multi-4/LPCIe RS232 1


SystemBase PCI Express Multi-4/LPCIe RS232 2

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