ExpressCards are becoming increasingly more common and popular in new laptop designs.
ExpressCard slots are scaleable high speed bus interfaces that improve performance by supporting both the PCI Express and USB 2.0 standards in a single slot.
Quatech’s new ExpressCard Performance series provides enhanced serial and parallel ports that are connected directly to the host systems PCI-Express bus and as a consequence out perform similar USB controller based devices.
The Performance series controllers support a single PCI-Express lane operating at up to 2.5 Gbps data rate. In Addition a PCI-Express based design can directly use I/O address space and interrupts, thus more closely emulating traditional built-in ports than can be done via USB-based design.
Available models include the SPPXP-100 parallel port card, the SSPXP-100 and DSPXP-100 one and two port RS-232 serial cards, and the SSPXP-200/300 and DSPXP-200/300 one and two port
RS-422/485 cards - The ExpressCard Performance line supports data rate speeds of up 921.6kbps, offering a steady data throughput. The serial design offers flexibility with deeper FIFOs, auto half-duplexing transmit control on RS-422/485 cards and full compatibility with all Windows COM port settings.
The parallel port SPPXP-100 supports both ECP and EPP modes and uses the standard Windows parallel port driver for unbeatable compatibility. While the parallel and serial ExpressCards are I/O addressable, legacy DOS addresses are not supported.
All Quatech ExpressCards are RoHS compliant and support Windows 2000, XP, Server 2003 and Vista platforms.
Quatech ExpressCards are available from Interworld Electronics.