PEX4S953LP - Adapter / Network Card StarTech.com - Free user manual and instructions
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| Product Type | PCIe Serial Adapter Card |
| Model Number | PEX4S953LP |
| Host Interface | PCI Express x1 |
| Ports | 4 x RS232 DB9 Male |
| UART Chipset | Oxford 16C950 with 128-byte FIFO |
| Maximum Data Rate | 921.6 Kbps per port |
| Form Factor | Low profile (includes low-profile and full-height brackets) |
| Dimensions | 12.0 x 6.8 x 1.8 cm (with low-profile bracket) |
| Weight | 150 g |
| Power Source | Bus-powered via PCIe slot |
| Supported OS | Windows (10/8/7/Vista/XP), Linux, and other operating systems with compatible drivers |
| Surge Protection | Built-in ESD protection up to 15 kV |
| Operating Temperature | 0°C to 60°C (32°F to 140°F) |
| Storage Temperature | -20°C to 80°C (-4°F to 176°F) |
| Certifications | RoHS, CE, FCC |
| Maintenance and Cleaning | Disconnect power before cleaning; use a soft dry cloth, avoid liquids and abrasive cleaners |
| Safety Instructions | Install in a powered-off computer; handle card by edges to avoid ESD damage |
| Spare Parts and Repairability | No user-serviceable parts inside; do not attempt to open or repair |
| Package Contents | 1 x PCIe serial card, 2 x brackets (low-profile and full-height), driver CD, user manual |
Frequently Asked Questions - PEX4S953LP StarTech.com
What is the StarTech.com PEX4S953LP used for?
The PEX4S953LP is a PCIe serial adapter card that adds four RS232 DB9 serial ports to a desktop computer. It is ideal for connecting legacy serial devices such as modems, industrial equipment, barcode scanners, and POS systems.
Which operating systems are supported?
The card supports Windows 10/8/7/Vista/XP, Linux, and other operating systems with compatible drivers. Windows usually includes a native driver, while others may require downloading from the StarTech website.
Can this card fit in a small form factor or low-profile computer?
Yes, the PEX4S953LP is designed with a low-profile form factor and includes both low-profile and full-height brackets, so it can be installed in most mini-towers and small form factor PCs.
What is the maximum data transfer rate?
The card supports data rates up to 921.6 Kbps per port, ensuring fast and reliable serial communication for a wide range of devices.
Does the PEX4S953LP require an external power supply?
No, the card is bus-powered directly from the PCIe slot. It does not need any external power connection, making installation simple and clean.
How many serial devices can I connect?
The PEX4S953LP provides four independent RS232 serial ports, so you can connect up to four serial devices simultaneously.
Does the card support full-duplex communication?
Yes, RS232 is inherently a full-duplex interface, and the 16C950 UART chipset supports simultaneous transmission and reception, allowing efficient bidirectional data flow.
Can I use this card with industrial or medical equipment?
Absolutely. The card is designed with 15kV ESD surge protection and wide OS compatibility, making it suitable for industrial automation, laboratory instruments, and point-of-care devices.
How do I install the drivers?
Install the card in an available PCIe slot, then connect the included driver CD or download the latest drivers from the StarTech website. In most cases, Windows will automatically detect the card and install a basic driver; for advanced features, install the full driver package.
What should I do if my computer does not recognize the card after installation?
First, verify that the card is securely seated in the PCIe slot. Next, check the BIOS to ensure PCIe devices are enabled. If using Windows, open Device Manager to see if the card appears under 'Ports (COM & LPT)' or 'Other devices'. If there is an error, reinstall the drivers and restart the computer.
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USER MANUAL PEX4S953LP StarTech.com
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Product information
Brand : StarTech.com
Model : PEX4S953LP
Category : Adapter / Network Card