The Comtrol 99365-0 RocketPort uPCI Universal 8-Port Low Profile Serial Port Expansion Card adds eight software-selectable RS-232 or RS-422 serial ports to any PCI-based computer system. Built for space-constrained installations, this half-height card integrates a 36 MHz RISC processor and Comtrol’s custom ASIC to handle asynchronous serial communications while minimizing host CPU load. The card operates across all current 3.3 V and 5.0 V PCI bus architectures, supporting both 32-bit and 64-bit slot configurations.
## Technical Specifications
• **Serial Interface:** Software-selectable RS-232 or RS-422
• **Port Count:** 8 ports per card
• **Baud Rates:** 300 to 230.4 Kbps
• **On-Board Processor:** 36 MHz RISC processor
• **Transmit Buffer:** 16× larger than standard 16550 UART
• **Receive Buffer:** 64× larger than standard 16550 UART
• **PCI Compliance:** Universal PCI, 3.3 V and 5.0 V compatible
• **PCI Slot Support:** 32-bit and 64-bit
• **RoHS Compliance:** RoHS 2 compliant
• **Operating Temperature:** 0°C to 45°C
## Key Features
• No interrupt assignment required—eliminates configuration conflicts
• Low-profile form factor for dense server deployments
• External interface modules sold separately; surge-protected options available
• Four cards maximum per system for up to 128 additional serial ports
## Typical Applications
• Serial device management in legacy and modern infrastructure
• High-throughput data acquisition and industrial control systems
• Telecom and networking equipment requiring multiple RS-232/RS-422 channels
## Compatibility & Integration
The card requires a PCI 2.2 specification-compliant host system. Driver support covers popular operating systems. Multiple RocketPort Universal PCI cards may be installed in a single computer to scale serial port density.
