Add eight RS232 serial ports (DB9) to your computer through two desktop PCIe expansion card slots - 8 port PCI express serial card with 16C1050 UART - High-speed data transfer rates up to 921.4Kbps - 8 port PCIe serial card comes pre-configured for low-profile and includes two full-profile brackets for versatile use with low profile and standard computer cases - PCIe serial card supports 256-byte depth FIFO per transmitter and receiver - 8 port PCIe serial card with Lifetime Warranty