What operating systems is this PCI Express to Serial Port Card compatible with?

The PCI Express to Serial Port Card is compatible with Windows 2000, XP 32/64-bit, Server 2003 32/64-bit, Vista 32/64-bit, and Server 2008 32/64-bit.

What kind of hardware and software flow control does this card support?

Supports hardware and software flow control.

What is the transfer data rate of each serial port on this card?

The transfer data rate of each serial port on this card is up to 250Kbps.

Can I convert this card to a low profile card with a single serial port?

Yes, this card can be converted to a low profile card with a single serial port.

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SYBA PCI-Express 2-Port DB9 RS232 Serial Card with Low Profile Bracket - RoHS Model SD-PEX15022

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PCI Express to Serial Port Card
2 x Serial Ports
Transfer data rates up to 250Kbps on each port

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PCIE 2X PORT SERIAL DB9 CARD, MOSCHIP 99

Model
Brand	SYBA
Model	SD-PEX15022

Details
Type	PCI Express to Serial Port Card
External Ports	2 x Serial Ports
Operating Systems Supported	Supports Windows 2000, XP 32/64-bit, Server 2003 32/64-bit, Vista 32/64-bit, Server 2008 32/64-bit

Features
Features	PCI-Express RS232 2x Serial Port with MSC9901 Chipset Fully compliant with PCI-Express Base Specification Revision 1.0a Single-Lane (x1) PCI-Express with throughput up to 2.5Gbps Convert to low profile card with SINGLE serial port Compatible with industrial standard 16C550 UART On chip 256-byte depth FIFO in transmit Transfer data rates up to 250Kbps on each port Supports hardware and software flow control Supports 5, 6, 7, 8-bit serial format

Dimensions & Weight
Weight	0.35

Additional Information
First Listed on Newegg	May 30, 2026

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SYBA PCI-Express 2-Port DB9 RS232 Serial Card with Low Profile Bracket - RoHS Model SD-PEX15022

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Item#: 9SIC6VHKY20163

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SYBA PCI-Express 2-Port DB9 RS232 Serial Card with Low Profile Bracket - RoHS Model SD-PEX15022

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