StarTech-com-EC1S952-1-Port-ExpressCard-RS232-Serial-Adapter-Card-16950-UART-StarTech-com-EC1S952-P-With-the-EC1S952-1-Port-Native-ExpressCard-RS232-Serial-Adaptor-Card-with-16950-UART-from-StarTech-com-you-can-add-an-RS232-serial-port-to-your-laptop-or-ExpressCard-equipped-desktop-computer-P-P-The-serial-ExpressCard-is-based-on-a-single-chip-architecture-as-opposed-to-cards-that-use-a-bridge-chip-providing-native-PCI-Express-communication-for-greater-performance-and-reliability-by