Unique PCI‑E 2x Serial & 1x Parallel multi‑I/O combo card – Single‑slot expansion card that adds 2× RS‑232 serial (DB9) and 1× IEEE 1284 parallel (DB25) ports to a PC, compatible with both PCI and PCI‑Express x1 slots. Based on a 16C550‑class UART, supports standard serial speeds up to 115.2 kbps (some listings quote up to 16 Mbps per port depending on chipset) and parallel modes SPP/EPP/ECP with bi‑directional speeds up to 1.5 MB/s. Includes standard and low‑profile brackets for desktop and slim cases.
