1-port PCI Express RS232 Serial Adapter Card StarTech PEX1S953LP

Name: 1-port PCI Express RS232 Serial PEX1S953LP
Brand: StarTech
SKU: 2093708
Price: 61.49 EUR
Availability: InStock

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Offer for legal entity, cashless payment. Why is an item available only for a legal entity?
This is due to long delivery times and limited product warranties.

Short description

The StarTech.com 1-port PCI Express RS232 Serial Adapter Card (PEX1S953LP) provides a reliable serial connection with a 16950 UART chipset. It supports baud rates up to 921.4 Kbit/s and features a FIFO buffer of 256 B. Compatible with Windows and Linux operating systems, this low-profile expansion card is ideal for adding serial ports to your system. Dimensions: 67mm width, 98mm depth, 150mm height. MTBF of 277385 hours ensures durability.

Available at price 61.49 €: 15 pcs.

Total available for order: 133 pcs.

Warranty: 2 Years

SKU: 2093708

Manufacturer: StarTech

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Cheapest delivery:

Unisend LV

Pick-up points

Unisend LV

Cost

1.79 €

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Customer service center

2b. Kengaraga str., Riga, Latvia, LV-1063

12.08.2026 {{selectedOffer.officeDeliveryString}}

free

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17.08.2026 {{selectedOffer.courierDeliveryString}}

From 4.99 € (Weight: 0.12 kg)

Parcel couriers

Unisend LV / Venipak Pickup LV / Venipak Locker LV / Latvijas Pasts pakomāts / DPD Paku skapis / Omniva LV / Latvijas Pasts nodaļa

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From 1.79 €

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Payment Methods:

Cash payment, Bank transfer, Bank cards on-line, Apple Pay, Google Pay

Available for private customers at price 63.49 €: 6 pcs.

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Product information

Description

The StarTech 1-port PCI Express RS232 Serial Adapter Card (PEX1S953LP) adds a single DB9 RS232 serial port to a computer via a PCI Express slot. It uses an Asix AX99100 chipset with an industry-standard 16950-compatible UART, supports baud rates up to 921.4 Kbps, and provides a 128-byte FIFO per transmitter and receiver. The low-profile card includes an optional full-profile bracket for installation in different chassis and is compatible with Windows and Linux operating systems.

Advantages

This PCIe to serial adapter offers broad OS compatibility and a reliable UART implementation for consistent serial communication at high baud rates. The card supplies 5/12V power on Pin 9 when external power is connected, includes a 128-byte depth FIFO for both transmit and receive paths, and complies with PCI Express 1.1 standards. Its low-profile form factor with an included full-profile bracket simplifies installation in various system types.

Suitable for

Connecting serial devices such as card readers and POS printers
Integrating PIN pads and legacy modems into modern PCs
Industrial control systems that require RS232 ports
Mixed OS environments running Windows and Linux

Key specifications

Manufacturer: StarTech
Model: PEX1S953LP
Interface: PCI Express (PCIe 1.1 compliant)
Serial port: 1 × RS232 DB9
Chipset: Asix AX99100
UART compatibility: industry standard 16950-compatible
Maximum baud rate: up to 921.4 Kbps
FIFO: 128-byte per transmitter and receiver
Power on Pin 9: 5/12V when external power is connected
Form factor: low-profile with optional full-profile bracket
Dimensions (approx.): 67 mm W × 98 mm D × 150 mm H
Weight: 0.044 kg
Operating systems: Windows and Linux compatible
MTBF: 277385 hours

How to use

Insert the PEX1S953LP into an available PCIe slot on the motherboard, secure the card with the appropriate bracket for your chassis, and, if required, connect external power to enable Pin 9 power output. Install drivers or allow the operating system to load native drivers for Windows or Linux. After installation, connect the RS232 DB9 serial device and configure serial port parameters (baud rate, data bits, parity, stop bits) in your application or OS serial port settings.

Usage recommendations

Use appropriate RS232 cables and verify device wiring and power requirements before connecting. For maximum communication reliability, match the baud rate and UART settings on both the host and serial device, and ensure the system BIOS and OS have the PCIe slot enabled. In mixed environments, test driver compatibility on each target OS prior to deployment.

Specifications

Internal: The product is built in.: Yes
Host interface: Interface that enables a host controller to communicate with a driver.: PCIe
Output interface: The socket (port) where the output connectors are connected.: Serial

All features

Weight & dimensions

Package weight: Weight of the packaged product.: 112 g
Weight: Weight of the product without packaging (net weight). If possible, the net weight is given including standard accessories and supplies. Please note that sometimes the manufacturer leaves out the weight of accessories and/or supplies.: 0.044 kg
Height: The measurement of the product from head to foot or from base to top.: 150 mm
Depth: The distance from the front to the back of something.: 98 mm
Width: The measurement or extent of something from side to side.: 67 mm

Operational conditions

Operating relative humidity (H-H):: 20 - 80
Storage temperature (T-T): The minimum and maximum temperatures at which the product can be safely stored.: -20 - 80
Operating temperature (T-T): The minimum and maximum temperatures at which the product can be safely operated.: 0 - 70

System requirements

Server operating systems supported:: Windows Server 2016, Windows Server 2012 R2, Windows Server 2012, Windows Server 2003, Windows Server 2008 R2
Linux operating systems supported: 8 RT. Linux (9.4, 9.5), Red Hat Enterprise Linux 5.0 (supported with a pre-built package); SUSE Linux (10.3, 11.0, 11, 11.1, 11.2), Fedora (9, 9.0, 10, 10.0, 11.0, 11, 12, 12.0), Ubuntu (8.04, 8.04.1, 8.04.2, 8.10, 9.04, 9.10, 10.04), Debian (5.0, 5.0.1, 5.0.2, 5.0.3): Yes
Windows operating systems supported: Windows vesions wich can be used with the device.: Windows 7 Home Premium x64, Windows 11 x64, Windows 7 Home Premium, Windows 7 Home Basic x64, Windows 7 Home Basic, Windows 7 Enterprise x64, Windows 7 Enterprise, Windows 7, 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 7 Professional x64, Windows 8.1 x64, Windows 8.1 Pro x64, Windows 8.1 Pro, Windows 8.1 Enterprise x64, Windows 8.1 Enterprise, Windows 8.1, Windows 8 x64, Windows 8 Pro x64, Windows 8 Pro, Windows 8 Enterprise x64, Windows 8 Enterprise, Windows 8, Windows 7 x64, Windows 7 Ultimate x64, Windows 7 Ultimate, Windows 7 Starter x64, Windows 7 Starter, Windows 7 Professional

Other features

Quantity: The number of products there are.: 1
Manual:: Yes

Logistics data

Harmonized System (HS) code:: 84733020
Products per master (outer) case:: 75 pc(s)
Master (outer) case height:: 315 mm
Master (outer) case length:: 685 mm
Master (outer) case width:: 360 mm

Packaging data

Package height: The distance from the top to the bottom of the packaging.: 30 mm
Package depth: The distance from the front to the back of the packaging.: 170 mm
Package width: The distance from one side of the packaging to the other.: 142 mm
Mounting brackets included:: Yes

Technical details

Sustainability compliance:: Yes
Compliance certificates: Indicates which regulatory, safety, and environmental standards the product complies with, as verified by recognized authorities or certification bodies.: CE, RoHS

Features

Flow Control type:: RTS/CTS, XON/XOFF, No
Flow control support:: Yes
Parity bit:: Space, Odd, No, Mark, Even
Stop bits:: 1, 1.5, 2
Data bits:: 6, 9, 8, 5, 7
FIFO (First In, First Out):: 256
Baud rate:: 921.4 Kbit/s

Design

Product colour: The colour e.g. red, blue, green, black, white.: Green
Internal: The product is built in.: Yes

Ports & interfaces

Peripheral (Molex) power connectors (4-pin): White 4-pinned connector used to connect a peripheral to the power supply.: 1
Serial interface type:: RS-232
Serial ports quantity: The number of serial ports in a computer or peripheral. A serial port is a serial communication physical interface through which information transfers in or out one bit at a time. The term "serial port" usually identifies hardware more or less compliant to the RS-232 standard, intended to interface with a modem or with a similar communication device. In modern computers and peripherals, serial ports have largely been replaced by USBs and other interfaces.: 1
Expansion card standard:: PCIe 1.1
Host interface: Interface that enables a host controller to communicate with a driver.: PCIe
Output interface: The socket (port) where the output connectors are connected.: Serial

Performance

Mean time between failures (MTBF): Statistical model used to indicate product/mechanism reliability; expressed in hours and percentage of duty cycle. This number (in hours) does not indicate the mean time before failure for a single unit/mechanism.: 277385 h
Chipset: Set of electronic components in an integrated circuit that manages the data flow between the processor, memory and peripherals. It is usually found in the motherboard of a computer. Chipsets are usually designed to work with a specific family of microprocessors. Because it controls communications between the processor and external devices, the chipset plays a crucial role in determining system performance.: Asix AX99100

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Instructions

startech-PEX1S953LP-2093708.pdf

Description

Instructions

startech-PEX1S953LP-2093708.pdf

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Warehouse	Stock	Delivery to the store	Store Price
WH354	6	12.08.2026 Best delivery	63.49 €
WH94	53	12.08.2026 Best delivery	73.99 €

Available only for legal entities
Warehouse	Stock	Delivery to the store	Store Price
WH15	15	12.08.2026 Best delivery	61.49 € Best price
EU9	53	12.08.2026 Best delivery	62.49 €
WH109	6	26.08.2026	64.99 €

63.49 €

Stock: 6

Delivery Date: 12.08.2026 Best delivery

Warehouse: WH354

73.99 €

Stock: 53

Delivery Date: 12.08.2026 Best delivery

Warehouse: WH94

Available only for legal entities

61.49 €

Stock: 15

Delivery Date: 12.08.2026 Best delivery

Warehouse: WH15

62.49 €

Stock: 53

Delivery Date: 12.08.2026 Best delivery

Warehouse: EU9

64.99 €

Stock: 6

Delivery Date: 26.08.2026

Warehouse: WH109

Customer reviews

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Customer questions

FAQ

How much does the 1-port PCI Express RS232 Serial Adapter Card StarTech PEX1S953LP cost, and is it available for purchase?

The price is 61.49 € (valid at the time of publication and already includes all taxes). The item is available for order — 133 pcs. are in stock, and you can place your purchase right now with delivery across Latvia and Europe or choose pickup at the Riga collection point. We offer favorable purchase terms, including the option to split the payment into convenient monthly installments. Availability and price are updated in real time, so we recommend placing your order in advance.

If I order this product today, when will I receive my order?

If you place your order today, delivery will be as fast and convenient as possible. You will be able to pick up your order on 12.08.2026 at the Riga pickup point or choose delivery across Latvia and Europe. We carefully inspect every purchase and pack it securely for safe transportation.

What payment options are available?

AiO.lv offers several payment methods: Cash payment, Bank transfer, Bank cards on-line, Apple Pay, Google Pay. All transactions are 100% secure and encrypted.

Can this product be purchased for a company (with VAT)?

Yes. AiO.lv works with legal entities in Latvia and across Europe. The product price already includes VAT. For certain product categories, as well as for companies from other EU countries with a valid VAT number, a 0% VAT rate may apply. We issue the invoice immediately after the order is placed, support electronic BIS invoices, and automatically generate all necessary accounting documents. You can complete the purchase for a company online — simply select the company profile and choose bank transfer as the payment method during checkout.

What is the warranty period?

All StarTech products come with an official 2 Years warranty. It covers all manufacturing defects and malfunctions that may occur during use. The warranty is valid at all authorized StarTech service centers and through AiO.lv

Can the product be returned after purchase?

Yes, you can return the product within 14 days of purchase if you bought it as a consumer (not a legal entity). Returns are possible without giving any reason — the main condition is that the product retains its original appearance and full set of accessories. We will make the process as simple and convenient as possible: just contact our customer support team, and we will help you arrange the return.

Where should I contact for warranty service?

For warranty-related questions you can contact the AiO.lv (SIA VSPRO) customer support team. We will assist with consultation, warranty claim processing, and coordination with certified service centers.

How can I tell if this product suits my needs?

When making a choice, we recommend paying attention to the key features: internal, host interface, output interface, compatibility with your devices or usage conditions, material quality, functionality, and warranty terms. These characteristics will help you determine how well the model meets your needs.

Where can I download the instructions for 1-port PCI Express RS232 Serial Adapter Card StarTech PEX1S953LP?

You can download the instructions in PDF format from the “Instructions” section on the product description page. The file contains complete information about installation, setup, and usage.

Show all questions

1-port PCI Express RS232 Serial Adapter Card StarTech PEX1S953LP

Short description

Product information

Description

Advantages

Suitable for

Key specifications

How to use

Usage recommendations

Specifications

Weight & dimensions

Operational conditions

System requirements

Other features

Logistics data

Packaging data

Technical details

Features

Design

Ports & interfaces

Performance

Instructions

Description

Instructions

Similar products

Product comparison

Customer reviews

Customer questions

How much does the 1-port PCI Express RS232 Serial Adapter Card StarTech PEX1S953LP cost, and is it available for purchase?

If I order this product today, when will I receive my order?

What payment options are available?

Can this product be purchased for a company (with VAT)?

What is the warranty period?

Can the product be returned after purchase?

Where should I contact for warranty service?

How can I tell if this product suits my needs?

Where can I download the instructions for 1-port PCI Express RS232 Serial Adapter Card StarTech PEX1S953LP?