Startech 2-port PCI Express RS232 Serial Adapter Card, PCIe RS232 Serial Host Controller Card, PCIe to Serial DB9 COM Ports, 16950 UART, Low Profile Expansion Card, Windows/macOS/Linux
Full/Low-Profile (PEX2S953LP) | Serial adapter | PCI Express x1 low profile | RS-232 x 2
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Main Specification
| Product Description | Startech 2-port PCI Express RS232 Serial Adapter Card, PCIe RS232 Serial Host Controller Card, PCIe to Serial DB9 COM Ports, 16950 UART, Low Profile Expansion Card, Windows/macOS/Linux - Full/Low-Profile (PEX2S953LP) - serial adapter - PCI Express x1 - RS-232 x 2 |
|---|---|
| Device Type | Serial adapter |
| Form Factor | Plug-in card - low profile |
| Interface (Bus) Type | PCI Express x1 |
| PCI Specification Revision | PCIe 1.1 |
| Ports | RS-232 x 2 |
| Dimensions (WxDxH) | 6.7 cm x 9.8 cm x 1.8 cm |
| Weight | 55.6 g |
| Data Link Protocol | RS-232 |
| Data Transfer Rate | 921.6 Kbps |
| Processor | ASIX AX99100 |
| System Requirements | Microsoft Windows Server 2003, Microsoft Windows Server 2008 R2, Microsoft Windows Server 2012, Microsoft Windows Server 2012 R2, Microsoft Windows Server 2016, Linux 2.4 - 2.6.x |
| Manufacturer Warranty | Limited lifetime warranty |
General
| Device Type | Serial adapter |
|---|---|
| Form Factor | Plug-in card - low profile |
| Interface (Bus) Type | PCI Express x1 |
| PCI Specification Revision | PCIe 1.1 |
Networking
| Ports | RS-232 x 2 |
|---|---|
| Connectivity Technology | Wired |
| Data Link Protocol | RS-232 |
| Data Transfer Rate | 921.6 Kbps |
| Features | Full duplex mode, 256-byte FIFO |
Processor / Memory
| Processor | ASIX AX99100 |
|---|
Expansion / Connectivity
| Interfaces | 2 x RS-232 - 9 pin D-Sub (DB-9) |
|---|
Miscellaneous
| Included Accessories | Full-height bracket |
|---|---|
| Compliant Standards | WHQL, FCC, RoHS, WEEE |
Software / System Requirements
| OS Required | Microsoft Windows Server 2003, Microsoft Windows Server 2008 R2, Microsoft Windows Server 2012, Microsoft Windows Server 2012 R2, Microsoft Windows Server 2016, Linux 2.4 - 2.6.x |
|---|
Dimensions & Weight
| Width | 6.7 cm |
|---|---|
| Depth | 9.8 cm |
| Height | 1.8 cm |
| Weight | 55.6 g |
Dimensions & Weight (Shipping)
| Shipping Weight | 146.4 g |
|---|
Manufacturer Warranty
| Service & Support | Limited warranty - lifetime |
|---|
Environmental Parameters
| Min Operating Temperature | -10 °C |
|---|---|
| Max Operating Temperature | 80 °C |
| Humidity Range Operating | 5 - 85% |
Product features
Enhanced connectivity
This 2-port PCI Express RS232 Serial Adapter Card offers seamless connectivity with its two 9-pin D-Sub (DB-9) RS-232 ports, enabling efficient connection to a wide range of serial devices.High-speed data transfer
Experience rapid data communication with a data transfer rate of up to 921.6 Kbps, facilitated by a 256-byte FIFO and full duplex mode. This ensures swift and reliable data transmission for all connected devices.Broad compatibility
Designed to support a variety of operating systems, this PCIe to Serial DB9 COM Ports card is compatible with Windows, macOS, and Linux, offering versatile use across different platforms.Durable and compliant
Built to last, the card adheres to FCC, RoHS, WEEE, and WHQL standards, ensuring a reliable and environmentally friendly solution for expanding your system's serial capabilities.Key selling points
- 2 PORT SERIAL CARD: Serial controller card w/16950 UART based on ASIX AX99100, allows 2x DB9 ports w/bi-directional RS232 speeds up to 921.6Kbps per port, available 256 byte FIFO buffer & 9th data bit
- OPTIONAL CONFIGURABLE POWER: PCI Express RS232 serial adapter card provides choice of 12v, 5v, or none through pin 9 w/up to 2A total; Each of the 2 ports are individually configurable
- LOW PROFILE BRACKETS PRE-INSTALLED: PCIe multiport serial card comes w/ a low profile bracket preinstalled & a full profile bracket is incl for versatile install; supports Windows XP and up & Linux
- VERSATILE APPLICATIONS: For standard/low profile desktop/servers w/ uses in point of sale terminals, PLCs, control/automation in factories, scientific sensors, medical equipment, scanner, oscilloscope
- STARTECH.COM ADVANTAGE: IT professionals choice for over 30 years; PCIe RS232 Serial expansion card is backed for life by StarTech.com, incl. free 24/5 North America based multi-lingual tech support
References
MPN: PEX2S953LP
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04/06/2026 01:59:30