Sealevel Systems COMM+8.PCIE Low Profile PCIe 8-Port RS-232 Serial Interface Card

The Sealevel Systems COMM+8.PCIE is a low-profile PCI Express serial interface card that adds eight RS-232 ports to a computer system. Designed for industrial automation, data acquisition, and communication applications, it delivers flexible serial connectivity expansion with high-speed performance and full modem control signal support.

– Technical Specifications

• Interface: PCI Express 2.0 Gen 1 compliant
• Serial Ports: 8 × RS-232
• Data Rate: Up to 230,400 bps
• UART: High-speed UART with 256-byte TX and RX FIFOs
• Modem Control Signals: Fully implemented for maximum peripheral compatibility
• Clock Source: Derived from PCI Express link via baud rate generator with 16-bit clock divisor
• Power: Supplied by PCI Express bus

– Key Features

• Compatible with all standard PCI Express x1, x4, x8, and x16 slots
• Operates in any low-profile PCIe slot configuration
• Micro 68-pin female connector with included CA202 cable terminating to eight DB25M connectors
• RoHS compliant per 2011/65/EU directive and WEEE requirements
• Supports Windows 7, 8.1, 10, and 11
• Linux kernel 2.6.28 and later

– Typical Applications

• Industrial automation systems requiring multiple serial connections
• Data acquisition platforms with legacy serial device integration
• Multi-port communication hubs for embedded systems
• Device-to-device serial networking in test and measurement environments

– Compatibility & Integration

The COMM+8.PCIE operates on PCI Express 2.0 Gen 1 and requires only bus power. It fits standard and low-profile form factor slots without additional power supply connections. The card integrates with Windows and Linux environments, supporting major operating systems from Windows 7 through Windows 11 and current Linux distributions. All eight RS-232 channels implement complete modem control signaling for transparent operation with industrial serial devices and legacy equipment.