EXSYS EX-42374 4-Port RS-232/422/485 PCI Express Low Profile Serial Adapter

Equip your system with four RS-232/422/485 serial ports over a single PCI Express x1 slot. The EX-42374 delivers 921.6 Kbps per port and 256-byte FIFO buffers, making it a strong fit for industrial automation, point-of-sale, and legacy device connectivity.

Overview

The EXSYS EX-42374 is a low-profile PCI Express serial adapter featuring four DB9 male ports. It supports RS-232, RS-422, and RS-485 standards, with data rates up to 921.6 Kbps per port. The Exar XR17V354 chipset ensures reliable performance, while 15KV ESD protection safeguards your system against electrostatic discharge.

What stands out

• Four independent serial ports on a single low-profile card
• Supports RS-232, RS-422, and RS-485 protocols
• High-speed data transfer up to 921.6 Kbps per port
• 256-byte FIFO buffer per port reduces CPU overhead
• Includes both standard and low-profile brackets for flexible installation

Technical details

• Bus interface: PCI Express x1
• Number of ports: 4
• Connector: DB9 male
• Serial standards: RS-232, RS-422, RS-485
• Max data rate: 921.6 Kbps per port
• FIFO buffer: 256 bytes per port
• Chipset: Exar XR17V354
• Flow control: Hardware (RTS/CTS, DTR/DSR), Software (XON/XOFF)
• Parity: Even, Odd, None, Mark, Space
• Data bits: 5, 6, 7, 8
• Stop bits: 1, 1.5, 2
• ESD protection: 15KV
• Operating temperature: 0°C to 55°C
• Storage temperature: -20°C to 85°C
• Relative humidity: 5% to 95% non-condensing
• Compatible operating systems: Windows 10, 8.1, 8, 7, Vista, XP; Linux kernel 2.6.x and higher

Our verdict

The EX-42374 is a dependable multi-port serial solution for systems with limited expansion space. Its low-profile design and broad OS support make it a practical choice for industrial and commercial environments.