EXSYS EX-43063 2-Port RS-232 PCI Express Serial Adapter Card with ASIX AX99100 Chipset, 921.6 Kbps, Low Profile Bracket Included

With dual RS-232 ports running at up to 921.6 Kbps and a 256-byte FIFO buffer per port, the EXSYS EX-43063 keeps legacy serial devices responsive on modern PCIe systems. Each port is protected by 15KV ESD, so industrial peripherals stay safe even in electrically noisy environments.

Overview

The EXSYS EX-43063 is a PCI Express x1 expansion card that adds two high-speed RS-232 serial ports to any desktop or server. It uses the proven ASIX AX99100 chipset and supports PCIe 1.1, making it backward compatible with newer slots. The card includes both standard and low-profile brackets, so it fits everything from full towers to slim small-form-factor PCs.

What stands out

• Two independent RS-232 ports with DB9 male connectors
• ASIX AX99100 chipset for reliable, driver-supported operation
• 921.6 Kbps maximum data rate with 256-byte FIFO per port
• 15KV ESD protection on all serial lines
• Low-profile bracket included for compact systems
• Broad OS support: Windows, Linux, and macOS

Technical details

• Interface: PCI Express x1, PCIe 1.1
• Serial standard: RS-232
• Ports: 2 × DB9 male
• Chipset: ASIX AX99100
• Max data transfer rate: 921.6 Kbps
• FIFO buffer: 256-byte per port
• Flow control: Hardware (RTS/CTS), Software (XON/XOFF)
• Data bits: 5, 6, 7, 8
• Parity: Even, Odd, None, Mark, Space
• Stop bits: 1, 1.5, 2
• ESD protection: 15KV
• Operating temperature: 0°C to 70°C
• Certifications: CE, FCC, RoHS
• Compatible OS: Windows XP/Vista/7/8/10/11, Server 2003/2008/2012/2016/2019, Linux kernel 2.6.x+, macOS

Our verdict

The EXSYS EX-43063 is a dependable way to connect legacy serial equipment to modern computers. With dual ports, high speed, and robust protection, it is ideal for POS terminals, industrial controllers, and lab instruments.