Internal Serial Interface Card EXSYS EX-44064

The EXSYS EX-44064 Internal Serial Interface Card is a PCIe I/O adapter that provides four RS-232 serial ports based on the 16C1050-compatible UART. Designed for installation in desktop PCs, thin clients or servers, the card expands available COM ports via a PCI-Express slot and supports automatic Plug-and-Play configuration without manual IRQ or I/O address settings. The connector supplies +5V and +12V on pin 9 to support POS devices that require power over the serial connection.

Advantages

The EX-44064 offers reliable legacy serial connectivity with high-performance 16C1050-type UART compatibility, ensuring stable data transfer and broad device support. Its PCIe host interface provides straightforward installation with automatic configuration, eliminating IRQ and I/O conflicts. The card is CE and FCC certified, and its small form factor (87.4 mm × 66.7 mm) makes it suitable for a range of system chassis.

Suitable for

• Connecting legacy RS-232 devices such as barcode scanners and receipt printers
• Expanding COM ports in industrial PCs, thin clients and servers
• Point-of-sale (POS) systems that require +5V/+12V on pin 9

Key specifications

• Model: EXSYS EX-44064
• Interface: PCI Express (PCIe)
• Ports: 4 × RS-232 (16C1050-type UART compatible)
• Serial settings supported: data bits 5/6/7/8; stop bits 1/1.5/2
• Power on pin 9: +5V and +12V (Power over Serial for POS)
• Certifications: CE, FCC
• Dimensions: 87.4 mm (W) × 66.7 mm (D)
• Weight: 0.6 kg

How to use

Install the EX-44064 into an available PCIe slot on a powered-off system, secure the card to the chassis and boot the computer. The card is Plug-and-Play compatible; the operating system should detect and configure the serial ports automatically. Connect RS-232 devices to the card’s serial ports using appropriate DB9 cables; ensure POS peripherals that need power over pin 9 are compatible with +5V/+12V on that pin.

Recommendations

Use shielded serial cables for reliable communication in electrically noisy environments and confirm device voltage requirements before using the pin 9 power feature to prevent damage to connected peripherals.