PCIe Combo Serial Parallel Card – RS-232 & LPT Expansion
PCIe Combo Serial Parallel Card – RS-232 & LPT Expansion
PCIe Combo Serial & Parallel Expansion Card – Add RS-232 & LPT Ports Instantly
Upgrade your desktop PC with this PCIe Combo Serial Parallel Expansion Card. Instantly add two 9-pin RS-232 serial ports and a parallel (LPT) printer port to any PCIe-enabled system — no motherboard replacement required. Ideal for connecting legacy peripherals such as printers, barcode scanners, POS displays, industrial testing equipment, and security systems.
Key Features
- Dual RS-232 Serial Ports: Adds two 9-pin RS-232 ports, each supporting data transfer rates up to 250 Kbps.
- PCIe 2.0 Gen 1 Compliant: Fits into any PCI Express slot regardless of lane width (x1, x4, x8, x16).
- Configurable Power Output: Functions as a standard RS-232 port or with 5V/12V power output — configurable via onboard jumpers — for devices like handheld scanners and POS displays.
- Single-Lane PCIe Controller: Integrated PHY for reliable, low-latency data transmission.
- Full Serial Modem Control: Supports hardware and software flow control with 5, 6, 7, 8, and 9-bit serial data formats, plus Even, Odd, None, Space, and Mark parity options.
- 256-Byte On-Chip FIFO Buffers: Independent transmit and receive buffers per port for smooth, uninterrupted data flow.
- PCI Bus Power Management: Compliant with PCI Bus Power Management Specification Revision 1.2.
- Dual-Profile Design: Includes both full-size and low-profile mounting brackets — compatible with standard and slim desktop chassis.
Specifications
| Interface | PCI Express (PCIe) x1 |
| Ports Added | 2 × RS-232 Serial (DB9), 1 × Parallel LPT (DB25) |
| Max Data Rate | 250 Kbps per serial port |
| Material | Plastic PCB |
| Color | Green |
| Dimensions | Approx. 30 × 15 cm / 11.81 × 5.91 in |
| Country of Origin | Made in Mainland China |
What's in the Box
- 1 × PCIe Serial/Parallel Combo Expansion Card
- Full-size & low-profile mounting brackets
Compatible Use Cases
Perfect for POS systems, industrial testing and control devices, security systems, logistics management equipment, label printers, barcode scanners, and legacy parallel printers.
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Frequently Asked Questions
Q: Will this PCIe expansion card work with my desktop PC?
A: Yes — this PCIe combo serial parallel expansion card installs into any PCI Express slot (x1, x4, x8, or x16) and is compatible with standard and low-profile desktop chassis thanks to the included dual mounting brackets.
Q: Does this card support legacy parallel printers?
A: Absolutely. The card adds an LPT parallel port, making it fully compatible with legacy parallel printers and other parallel-port peripherals alongside two RS-232 serial ports.
Q: Can I power devices like scanners directly from this card?
A: Yes. The RS-232 ports can be configured via onboard jumpers to supply 5V or 12V power output, making it suitable for powering handheld scanners, POS displays, and similar peripherals that require port-level power.
Q: What operating systems does this expansion card support?
A: This card is designed for PCIe-enabled desktop computers. Driver support varies by chipset — please verify compatibility with your operating system (Windows, Linux, etc.) before purchase.
Production & Packaging Notice
To maintain high stock availability and fast shipping times, our items are sourced from multiple verified manufacturing facilities. While the core quality, materials, and product specifications remain identical, you may notice slight variations in the packaging design, manufacturing origin, or the wording of the printed instructions.