Brainboxes-XC-235-1-Port-RS232-Native-ExpressCard-Serial-Adaptor-Memory-Mapped-Brainboxes-XC-235-p-This-b-ExpressCard-b-serial-adapter-has-one-port-b-RS232-b-giving-absolute-compatibility-with-classic-desktop-serial-COM-ports-br-br-The-card-is-34mm-wide-and-will-fit-both-34mm-and-54mm-slots-Guaranteed-low-latency-and-memory-mapping-give-an-excellent-high-performance-interface-High-data-transfer-rates-and-128-byte-deep-FIFO-together-with-1Mbit-s-line-drivers-make-this-adapt