StarTech.com 1-port PCI Express RS232 Serial Adapter Card - PCIe RS232 Serial Host Controller Card - PCIe to Serial DB9 - 16950 UART - Low Profile Expansion Card - Windows & Linux

StarTech.com 1-port PCI Express RS232 Serial Adapter Card - PCIe RS232 Serial Host Controller Card - PCIe to Serial DB9 - 16950 UART - Low Profile Expansion Card - Windows & Linux

Brand StarTech.com

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£44.30

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You save £7.68 (15%)

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Listed since 7 April 2026

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Description

1 PORT SERIAL CARD: Serial controller card w/ 16950 UART based on ASIX AX99100, allows 1x DB9 port w/bi-directional RS232 speeds up to 921.6Kbps per port, available 256 byte FIFO buffer & 9th data bit; Upgraded version of our popular card PEX1S952LP. OPTIONAL CONFIGURABLE POWER: PCI Express RS232 serial adapter card provides choice of 12v, 5v, or none through pin 9 w/up to 2A total. STANDARD PROFILE & LOW PROFILE BRACKET: PCIe serial card comes w/ a low profile bracket pre-installed & 1x full profile bracket is incl for versatile install; Supports Windows XP and up & Linux. VERSATILE APPLICATIONS: For low/standard 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; PCI-e RS232 Serial expansion card is backed for life by StarTech.com, incl. free 24/5 North America based multi-lingual tech support. PCI Express to Serial Adapter | 921.4Kbps | Windows® and Linux® Compatible. This RS232 Serial Adapter Card lets you add an RS232 DB9 serial port to your computer through a PCI Express (PCIe) slot. It enables you to interact with serial devices such as card readers, printers, PIN pads, and modems, at speeds of up-to 921.4Kbps.. Maximum Compatibility. With broad OS support, including for Windows and Linux, this PCI Express card is easy to integrate into mixed environments. The card comes pre-configured with a low-profile bracket, and includes an optional full-profile bracket, so installation is easy regardless of the case form factor.. Experience Optimal Technology. This PCIe to serial adapter supports the following features:. • Compatible with industry standard 16950 UART. • Supports max baud rate of up-to 921.4Kbps. • Provides 5/12V power output on Pin 9 when external power is connected. • 128-byte depth FIFO per transmitter and receiver. • Supports 9, 8, 7, 6, 5 data bits. • Asix AX99100 chipset. • PCI Express 1.1 compliant. PEX1S953LP is backed by a StarTech.com lifetime warranty and free lifetime technical support.. The StarTech.com Advantage. Ports & interfaces. Peripheral (Molex) power connectors (4-pin). 1. Serial interface type. RS-232. Serial ports quantity. 1. Expansion card standard. PCIe 1.1. Output interface. Serial. Host interface. PCIe. Design. Mean time between failures (MTBF). 277385 h. Product colour. Green. Internal. Yes. Features. Flow Control type. No, RTS/CTS, XON/XOFF. Flow control support. Yes. Parity bit. Even, Mark, No, Odd, Space. Stop bits. 1, 1.5, 2. Data bits. 5, 6, 7, 8, 9. FIFO (First In, First Out). 256 B. Baud rate. 921.4 Kbit/s. Chipset. Asix AX99100. Operational conditions. Operating relative humidity (H-H). 20 - 80%. Storage temperature (T-T). -20 - 80 °C. Operating temperature (T-T). 0 - 70 °C. System requirements. Server operating systems supported. Windows Server 2003, Windows Server 2008 R2, Windows Server 2012, Windows Server 2012 R2, Windows Server 2016. Linux operating systems supported. Yes. Windows operating systems supported. Windows 10, Windows 10 Education, Windows 10 Education x64, Windows 10 Enterprise, Windows 10 Enterprise x64, Windows 10 Home, Windows 10 Home x64, Windows 10 IOT Core, Windows 10 IoT Enterprise, Windows 10 Pro, Windows 10 Pro x64, Windows 10 x64, Windows 11, Windows 11 x64, Windows 7, Windows 7 Enterprise, Windows 7 Enterprise x64, Windows 7 Home Basic, Windows 7 Home Basic x64, Windows 7 Home Premium, Windows 7 Home Premium x64, Windows 7 Professional, Windows 7 Professional x64, Windows 7 Starter, Windows 7 Starter x64, Windows 7 Ultimate, Windows 7 Ultimate x64, Windows 7 x64, Windows 8, Windows 8 Enterprise, Windows 8 Enterprise x64, Windows 8 Pro, Windows 8 Pro x64, Windows 8 x64, Windows 8.1, Windows 8.1 Enterprise, Windows 8.1 Enterprise x64, Windows 8.1 Pro, Windows 8.1 Pro x64, Windows 8.1 x64. Technical details. Sustainability compliance. Yes. Compliance certificates. CE, RoHS. Weight & dimensions. Weight. 44 g. Height. 150 mm. Depth. 98 mm. Width. 67 mm. Packaging data. Package weight. 112 g. Package height. 30 mm. Package depth. 170 mm. Package width. 142 mm. Manual. Yes. Mounting brackets included. Yes. Quantity. 1. Logistics data. Master (outer) case height. 315 mm. Master (outer) case length. 685 mm. Master (outer) case width. 360 mm. Products per master (outer) case. 75 pc(s). Harmonized System (HS) code. 84733020. manual pdf

Full specifications

Marque StarTech.com
Référence fabricant pex1s953lp
PORT SERIAL CARD Serial controller card w/ 16950 UART based on ASIX AX99100
OPTIONAL CONFIGURABLE POWER PCI Express RS232 serial adapter card provides choice of 12v
LOW PROFILE BRACKET PCIe serial card comes w/ a low profile bracket pre-installed & 1x full profile
VERSATILE APPLICATIONS For low/standard profile desktop/servers w/ uses in point of sale terminals
COM ADVANTAGE IT professionals choice for over 30 years
Supports The Following Features . • Compatible with industry standard 16950 UART. • Supports max baud rate of up

StarTech.com 1-port PCI Express RS232 Serial Adapter Card - PCIe RS232 Serial Host Controller Card - PCIe to Serial DB9 - 16950 UART - Low Profile Expansion Card - Windows & Linux: complete technical analysis for 2026

The StarTech.com 1-port PCI Express RS232 Serial Adapter Card - PCIe RS232 Serial Host Controller Card - PCIe to Serial DB9 - 16950 UART - Low Profile Expansion Card - Windows & Linux is one of the most searched products in the Informatique category in 2026. Offered by StarTech.com, it is aimed at those looking for a reliable product at the best price. Our comparison tool lists all available offers from partner retailers to help you make the right choice without overspending. Comparison is free and requires no registration. In a few seconds, you can access all current offers to find the most competitive price.

Who is this Informatique for?

The StarTech.com 1-port PCI Express RS232 Serial Adapter Card - PCIe RS232 Serial Host Controller Card - PCIe to Serial DB9 - 16950 UART - Low Profile Expansion Card - Windows & Linux benefits from the expertise of StarTech.com in this category. Its design meets current market standards and satisfies even the most demanding users in their everyday activities. The brand's reliability translates into positive feedback from regular buyers, who particularly appreciate the consistency between the promises of the product sheet and the real-world experience. For the Informatique category, this is an option we recommend without hesitation.

For intensive or occasional use

The StarTech.com 1-port PCI Express RS232 Serial Adapter Card - PCIe RS232 Serial Host Controller Card - PCIe to Serial DB9 - 16950 UART - Low Profile Expansion Card - Windows & Linux adapts to different levels of use in the Informatique category. Whether you use it intensively every day or more occasionally, this StarTech.com product offers appreciated versatility. Regular users value its reliability over time, while occasional users appreciate how easy it is to pick up without any special training. For even more demanding use, also check the StarTech.com 7 Port PCI USB Card Adapter.

Against the competition

In the Informatique market, the StarTech.com 1-port PCI Express RS232 Serial Adapter Card - PCIe RS232 Serial Host Controller Card - PCIe to Serial DB9 - 16950 UART - Low Profile Expansion Card - Windows & Linux is well positioned thanks to its price from £44.3 and the strength of StarTech.com. Our comparison tool lets you verify in real time whether this positioning still holds against other available offers.

Market price ranges in 2026

RangeIndicative price
Entry-levelUnder 384300 £
Mid-range384300 £ to 896710 £
High-endOver 896710 £

The best times to buy the StarTech.com 1-port PCI Express RS232 Serial Adapter Card - PCIe RS232 Serial Host Controller Card - PCIe to Serial DB9 - 16950 UART - Low Profile Expansion Card - Windows & Linux at a lower price are Black Friday in November, the January sales and the summer sales in July. Our price history lets you judge whether the current price is a genuine bargain or whether it is worth waiting a few weeks. Outside these periods, flash promotions remain frequent among Compiral's partner retailers.

Frequently asked questions about StarTech.com 1-port PCI Express RS232 Serial Adapter Card - PCIe RS232 Serial Host Controller Card - PCIe to Serial DB9 - 16950 UART - Low Profile Expansion Card - Windows & Linux

How does the StarTech.com 1-port PCI Express RS232 Serial Adapter Card - PCIe RS232 Serial Host Controller Card - PCIe to Serial DB9 - 16950 UART - Low Profile Expansion Card - Windows & Linux compare to competitors in the Informatique category?

In the Informatique category, the StarTech.com 1-port PCI Express RS232 Serial Adapter Card - PCIe RS232 Serial Host Controller Card - PCIe to Serial DB9 - 16950 UART - Low Profile Expansion Card - Windows & Linux occupies a specific market segment. Compared to other available models, it stands out mainly through the balance between its features and its price. To compare objectively, consult the detailed spec sheet on this page and compare specifications with other similar products listed on our comparison tool.

Is the StarTech.com 1-port PCI Express RS232 Serial Adapter Card - PCIe RS232 Serial Host Controller Card - PCIe to Serial DB9 - 16950 UART - Low Profile Expansion Card - Windows & Linux suitable for beginners?

Yes, the StarTech.com 1-port PCI Express RS232 Serial Adapter Card - PCIe RS232 Serial Host Controller Card - PCIe to Serial DB9 - 16950 UART - Low Profile Expansion Card - Windows & Linux is generally appreciated by both beginners and regular users of the Informatique category. It is quick to set up and StarTech.com usually provides clear documentation. If you are new to this product category, consult the spec sheet on this page to identify the key criteria to check before making your choice.

Is there a refurbished version of the StarTech.com 1-port PCI Express RS232 Serial Adapter Card - PCIe RS232 Serial Host Controller Card - PCIe to Serial DB9 - 16950 UART - Low Profile Expansion Card - Windows & Linux?

Refurbished versions of the StarTech.com 1-port PCI Express RS232 Serial Adapter Card - PCIe RS232 Serial Host Controller Card - PCIe to Serial DB9 - 16950 UART - Low Profile Expansion Card - Windows & Linux may be available from certain Compiral partner retailers. These refurbished products allow you to save between 20% and 40% compared to the new price while still benefiting from a warranty. Check availability in our offers table and review the warranty conditions offered by the retailer.

When do prices for the StarTech.com 1-port PCI Express RS232 Serial Adapter Card - PCIe RS232 Serial Host Controller Card - PCIe to Serial DB9 - 16950 UART - Low Profile Expansion Card - Windows & Linux drop during the year?

Prices for the StarTech.com 1-port PCI Express RS232 Serial Adapter Card - PCIe RS232 Serial Host Controller Card - PCIe to Serial DB9 - 16950 UART - Low Profile Expansion Card - Windows & Linux typically drop during Black Friday (November), the January sales and the summer sales (July). Promotional deals are also common around Cyber Monday and the holiday season. Our price history lets you spot trends and assess whether a price drop is likely soon in the Informatique category.

Is delivery free for the StarTech.com 1-port PCI Express RS232 Serial Adapter Card - PCIe RS232 Serial Host Controller Card - PCIe to Serial DB9 - 16950 UART - Low Profile Expansion Card - Windows & Linux at all retailers?

Free delivery is not guaranteed for the StarTech.com 1-port PCI Express RS232 Serial Adapter Card - PCIe RS232 Serial Host Controller Card - PCIe to Serial DB9 - 16950 UART - Low Profile Expansion Card - Windows & Linux at every retailer. Some include it in their price, others charge separately. On Compiral, use the free delivery filter to display only offers with free postage. The total price shown in our table always includes delivery costs for a true cost comparison.

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