Interface card DeLOCK 89641

The DeLOCK 89641 is a low-profile PCI Express (PCIe) internal interface card that adds two external RS-232 serial ports to a PC. Its compact dimensions and included low-profile brackets allow installation in standard and small form factor systems, providing reliable serial communication for devices such as scanners, POS systems, protocol converters and various IoT or infrared devices. The card supports standard serial settings and is intended for use where legacy or industrial serial connections are required.

Advantages

The card provides two external RS-232 ports on a single PCIe slot and comes with low-profile brackets for flexible installation in both full-size and mini-PC cases. It supports a range of data bit lengths (5–9) and stop bit options (1, 1.5, 2), enabling compatibility with many serial devices and protocols. Its small physical size and internal PCIe host interface make it suitable for space-constrained systems while maintaining dependable wired serial connectivity.

Suitable for

• Connecting barcode scanners and label printers
• Point of sale (POS) systems and cash registers
• Protocol converters and industrial control equipment
• IoT gateways and infrared devices requiring RS-232

Key specifications

• Model: DeLOCK 89641
• Host interface: PCIe (internal)
• Output interface: 2 × external RS-232 serial ports
• Data bits: 5–9
• Stop bits: 1, 1.5, 2
• Product colour: Green
• Dimensions: 63 mm (W) × 72 mm (D) × 10 mm (H)
• Form factor: Low-profile with included brackets

How to use

Install the card into an available PCI Express slot on the host PC and secure it with the appropriate bracket (standard or low-profile) according to the chassis size. Connect external serial devices to the RS-232 ports using standard DB9 or appropriate adapters or cables. Configure the serial port parameters (baud rate, data bits 5–9, parity, stop bits 1/1.5/2) in the operating system or application to match the connected device's requirements. Install any supplied or required drivers per the manufacturer’s instructions if the operating system does not provide native support.

Recommendations

Use shielded serial cables and proper grounding in industrial or noisy environments to ensure stable communication. Verify serial settings and test connections after installation to confirm compatibility with attached devices.