The PEX2S1P553B 2S1P PCI Express Serial Parallel Combo Card with Breakout Cable combines the functionality of Parallel and Serial cards, adding 2 RS232 serial ports and 1 parallel port through a single PCI Express (PCIe) slot. Suitable for almost any computer, the card offers a low profile/half-height design and includes an optional full-height bracket. The included break-out cable uses a single connector on the card to deliver 3 ports, avoiding crowded connections that can occur with fixed/static ports. Compatible with a broad range of operating systems including DOS, Windows® 7/Server 2008 R2/Vista/XP/Server 2003/2000/98SE (32/64 bit), Linux and Mac OS X. The card also features a native single-chip design that provides improved speed and reliability while reducing the CPU load by as much as 48% over conventional (bridge chip) cards. This product is a replacement for our PEX2S1P552B card. Backed by a StarTech.com Lifetime warranty and free lifetime technical support. More from the Manufacturer

• Low profile/half-height design with optional full profile bracket
• Single-chip architecture, no bridge chip
• Supports parallel data transfer rates up to 1.5 Mbps
• Supports serial data transfer rate up to 250 Kbps (per port)
• Compatible with industrial standard 16C450/16C550 UART
• Supports (SPP), Enhanced Parallel Port (EPP), Enhanced Capability Port(ECP)
• PCI Express Base Specification 1.0a compliant
• On-chip 256-byte depth FIFO in transmit/receive path of each port
• Single-Lane (x1) PCI-Express host connection