The Brainboxes 4 Port RS232 PCI Serial Port Card DB25 is designed to provide four industry - standard RS232 serial COM ports in a single Universal PCI slot. This plug - in card is TAA compliant and supports a maximum data transfer rate of 921.60 kbit/s. It features 64 Byte Tx and 64 Byte Rx FIFOs, ensuring efficient data handling. The card is compatible with all popular operating systems, including Windows 32 - bit and 64 - bit versions, and comes with drivers, sample programs, and terminal software. The package includes the PCI card, an installation CD with a manual, and Microsoft signed drivers and utilities. With a lifetime warranty (registration required) and lifetime support, this product is a reliable choice for enhancing your system's serial communication capabilities.