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The PEX2S553 PCI Express serial card lets you turn a PCI Express slot into 2 RS232 (DB9) serial ports. Based on a native single chip design (no bridge chip), this 2-port serial adapter card allows you to harness the full capability offered by PCI Express (PCIe), and reducing the load applied to the CPU by as much as 48% over conventional serial cards.The RS232 Serial Adapter Card (PEX2S553) is compatible with a broad range of operating systems including Windows® 2000/XP/2003/Vista™/Windows 7/Server 2008 R2 (32 and 64 bit), Linux Kernel 2.6.11 and up, and MAC OS 10.4 and above.Plus, the serial card includes an optional half-height/low profile bracket that allows the card to be installed in any PCI Express slot, regardless of the size of the computer case.
• Two high speed RS232 serial ports with support for data transfer rates up to 460.8 Kbps• Compliant with PCI Express base specifications revision 1.0a• Includes half-height/low profile mounting bracket• Selectable power output on pin 9 for the serial port• 128-byte deep FIFO per transmitter and receiver• Native single-Chip, single lane PCI Express• Automated out-of-band flow control using CTS/RTS and DSR/DTR• Automated in-band software flow control using programmable Xon/Xoff in both directions
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