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StarTech 1-port PCI Express RS232 Serial Adapter Card, PCIe Serial DB9 - PEX1S953LP
1-port RS232 PCI Express serial adapter with a Asix AX99100A controller, 16950-compatible UART and up to 921.6Kbps per port.
Frequently asked questions
What does PEX1S953LP do?
Adds one DB9 RS232 serial port to a PCIe x1 or larger slot for connecting compatible business, industrial and legacy equipment.
Who is this product best for?
POS terminals, card readers, printers, PIN pads, modems, automation equipment and other systems that still require native-style RS232 connectivity.
What should I check before ordering?
Confirm the target system has a free PCIe slot, the required low-profile bracket arrangement and operating-system support for the connected serial equipment.
Does it require drivers or software?
Drivers support the Windows, Windows Server and Linux versions listed in the specifications; confirm compatibility with any legacy application.
What is included in the package?
PCIe serial card, full-profile bracket and user manual.
What is the key installation requirement?
Install the card in a PCIe x1 or larger slot. Supplemental LP4 power is required only when using selectable 5V/12V output on serial pin 9.
Is it suitable for an Australian setup?
Yes. DeviceDeal supplies the Australian-market version; always confirm the available ports, power and system compatibility for your installation.
What warranty applies?
PEX1S953LP carries a StarTech.com limited lifetime manufacturer warranty, subject to the manufacturers terms and eligibility requirements.
Planning a broader setup? Browse the DeviceDeal buying guides. View the DeviceDeal product page.
(PEX1S953LP)
Why choose PEX1S953LP?

PEX1S953LP specifications
Exact-model specifications for compatibility checking.
| Warranty Information | |
|---|---|
| Warranty | Lifetime |
| Connectors | |
| Host Connector | 1 - PCI Express x1 |
| Internal Power | 1 - LP4 (4 pin; Large Drive Power) |
| External Ports | 1 - DB-9 (9 pin, D-Sub) |
| Hardware | |
| Ports | 1 |
| Interface | Serial |
| Bus Type | PCI Express |
| Card Type | Standard Profile (LP bracket incl.) |
| Port Style | Integrated on card |
| Chipset ID | Asix AX99100A |
| UART | 16950 compatible |
| Performance | |
| Serial Protocol | RS-232 |
| Maximum Baud Rate | 921.6 Kbps per port |
| Data Bits | 5, 6, 7, 8, 9 |
| FIFO | 256 Bytes |
| Flow Control | None, Xon/Xoff, RTS/CTS |
| Parity | None, Odd, Even, Space, Mark |
| Stop Bits | 1, 1.5, 2 |
| Powered Pin 9 | Selectable 5V, 12V or no power when supplemental power is connected |
| Software | |
| OS Compatibility | Windows 7/8/8.1/10/11; Windows Server 20032022; Linux 2.4.x and later LTS versions |
| Microsoft WHQL Certified | Yes |
| Environmental | |
| Operating Temperature | -10°C to 80°C |
| Storage Temperature | -20°C to 100°C |
| Humidity | 5% to 85% RH |
| What's in the Box | |
| Included | 1 - PCIe serial card; 1 - full-profile bracket; 1 - user manual |
Sources: supplied product file, DeviceDeal product page and official StarTech.com specifications. Product appearance and specifications may change; confirm critical deployment requirements before ordering.
| SKU | PEX1S953LP |
| Barcode # | 65030881159 |
| Brand | STARTECH |
| Shipping Weight | 0.1100kg |
| Shipping Width | 0.003m |
| Shipping Height | 0.017m |
| Shipping Length | 0.015m |
This Australian-version product is supplied by DeviceDeal and is covered by the official StarTech.com limited lifetime manufacturer warranty in Australia.
- Keep your DeviceDeal tax invoice as proof of purchase.
- Coverage is subject to StarTech.com warranty terms, eligibility and product assessment.
- Warranty service does not replace rights that may apply under Australian Consumer Law.
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