The Tripp Lite PCE‑D9‑04‑CBL is a full‑profile PCI Express (PCIe) expansion card that adds four DB9‑style RS‑232 serial ports to a computer system. Designed for standard‑size PCIe slots, the card provides a reliable hardware interface for legacy serial devices, and it includes a breakout cable that terminates each port with a DB9 connector for easy external access. The full‑height form factor ensures compatibility with typical desktop chassis, while the four‑port configuration offers a convenient solution for environments that require multiple simultaneous serial connections without the need for additional adapters or external hubs.