StarTech.com PEX2S953LP - 2Port PCIe RS232 Serial DB9 Adapter Card
Features
This RS232 Serial Adapter Card lets you add two RS232 (DB9) serial ports 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
Applications
- Install in home or office workstations
- Connect in retail POS applications
- Connect to automated self-service kiosks or ATM machines
- Interact with RS232 serial devices like card readers or printers
Specifications
Technical Specifications
| Bus Type | PCI Express |
|---|---|
| Card Type | Low Profile (SP bracket incl.) |
| Chipset ID | Asix AX99100 |
| Interface | Serial |
| Port Style | Integrated on Card |
| Ports | 2 |
| Data Bits | 5, 6, 7, 8, 9 |
| FIFO | 256 Bytes |
| Flow Control | None, Xon/Xoff, RTS/CTS |
| Max Baud Rate | 921.6 Kbps |
| Parity | None, Odd, Even, Space, Mark |
| Serial Protocol | RS-232 |
| Stop Bits | 1, 1.5, 2 |
| Connector Type(s) | 1 - PCI Express x1 Male |
| External Ports | 2 - DB-9 (9 pin, D-Sub) Male |
| Internal Ports | 1 - LP4 (4 pin; Large Drive Power) Male Input |
| Microsoft WHQL Certified | Yes |
| OS Compatibility | Windows® 7, 8, 8.1, 10Windows Server® 2003, 2008 R2, 2012, 2012 R2, 2016Linux 2.4.x to 2.6.x LTS Versions only |
| Note | Selectable power output on pin 9 of the serial port |
| Humidity | 5~85% RH |
| Operating Temperature | -10°C to 80°C (14°F to 176°F) |
| Storage Temperature | -20°C to 100°C (-4°F to 212°F) |
| Product Height | 0.7 in [1.8 cm] |
| Product Length | 3.9 in [98 mm] |
| Product Width | 2.6 in [67 mm] |
| Weight of Product | 2 oz [55.6 g] |
| Brand | StarTech.com |
|---|---|
| Product Type | PC Parts > IO, SCSI, IDE Cards > Serial Cards |
| Weight | 0.059 kg |
| Warranty |
|---|
Note:
Warranty period is as stated above unless the manufacturer has chosen to specify a longer period.
All warranties are return to base unless otherwise specified.
Shipping Information
- Free NZ-wide shipping on orders over $299
- Standard delivery 2–5 business days
- Rural delivery may take an additional 1–2 days
- Same-day dispatch for orders placed before 2pm (weekdays)
Returns Policy
- 7-day returns on unused items in original packaging
- Faulty or damaged products covered under warranty
- Contact our support team to initiate a return





