Serial/Parallel Adapters

SIIG Dual-Serial Port / RS-232 PCIe Card - Plug-in Card - PCI Express 1.1 x1 - Linux, PC - 2 x Number of Serial Ports External

Advantech 2-port RS-232 PCI Communication Card - Plug-in Card - PCI - PC, Linux - 2 x Number of Serial Ports External

StarTech.com 2-port PCI Express RS232 Serial Adapter Card - PCIe to Dual Serial DB9 RS-232 Controller - 16950 UART - Windows, macOS, Linux - 2-port PCI Express RS232 serial controller card 16950 UART/ASIX AX99100 - Bi-directional speeds 921.6Kbps/port | 2

SIIG DP Cyber 2S1P PCIe Card - Full-height Plug-in Card - PCI Express 2.0 x1 - PC - 1 x Number of Parallel Ports External - 2 x Number of Serial Ports External

SIIG DP Cyber 1S1P PCIe Card - Full-height Plug-in Card - PCI Express 2.0 x1 - PC - 1 x Number of Parallel Ports External - 1 x Number of Serial Ports External

StarTech.com 1-port PCI Express RS232 Serial Adapter Card - PCIe Serial DB9 Controller Card 16950 UART - Low Profile - Windows macOS Linux - 1 port PCI Express RS232 serial controller card w/16950 UART/ASIX AX99100 - Bi-directional speeds 921.6Kbps/port |

StarTech.com 2-port PCI Express RS232 Serial Adapter Card - PCIe Serial DB9 Controller Card 16950 UART - Low Profile - Windows macOS Linux - 2-port PCI Express RS232 serial controller card w/16950 UART/ASIX AX99100 - Bi-directional speeds 921.6Kbps/port |

Tripp Lite USB to Serial Adapter Converter RS-422/RS-485 USB to DB9 1-Port - External - USB Type B - PC, Mac, Linux - 1 x Number of Serial Ports External

Tripp Lite USB to Serial Adapter Converter RS-422/RS-485 USB to DB9 2-Port - External - USB Type B - Linux, Mac, PC - 2 x Number of Serial Ports External

Tripp Lite USB to Serial Adapter Converter RS-422/RS-485 USB to DB9 4-Port - External - USB Type B - PC, Mac, Linux - 4 x Number of Serial Ports External

StarTech.com USB to RS232/RS485/RS422 4 Port Serial Hub Adapter - Industrial Metal USB 2.0 to DB9 Serial Converter - Din Rail Mountable - Industrial 4 port serial hub 15kV Level 4 ESD - IP30 rating metal USB to serial adapter converter w/ each DB9 port se

StarTech.com USB to RS232/RS485/RS422 8 Port Serial Hub Adapter - Industrial Metal USB 2.0 to DB9 Serial Converter - Din Rail Mountable - Industrial 8 port serial hub 15kV Level 4 ESD - IP30 rating Metal USB to serial adapter converter w/ each DB9 port se

Brainboxes 2 Port RS232 USB to Serial Adapter - 50 Pack - DIN Rail Mountable - USB 2.0 - PC, Mac, Linux - 2 x Number of Serial Ports External

Advantech 2-port RS-232/422/485 PCI Express Communication Card w/Surge - Plug-in Card - PCI Express 2.0 x1 - PC, Linux - 2 x Number of Serial Ports External

Advantech 2-port RS-232/422/485 PCI Express Communication Card w/Surge & Isolation - Plug-in Card - PCI Express 2.0 x1 - PC, Linux - 2 x Number of Serial Ports External