COM2 Serial: Pin Interface. COM1 Serial: DB9 Port. Retro computer ISA interface card, 8086 80286 80386 80486 586 for pentium or for Celeron machine with ISA slot can be used. 1 ISA RS232 Serial and Parallel Port Card.
eBay
BRAND NEW IN THE BOX!!! The StarTech 4 Port Native PCI Express RS232 Serial Adapter Card with 16550 UART is a high-quality interface card designed for computers that require multiple serial ports. With its PCI express interface, this card provides reliable communication for a variety of applications. The card, model PEX4S553, offers 4 ports for connecting RS232 serial devices, making it an essential component for businesses or individuals looking to expand their computer's connectivity options.
eBay
Working well.
eBay
The 2 serial ports have the standard 9 way D type connections, the parallel port is accessed through header pins on the card (usually this would have a ribbon cable taking it out to a 25 way d type).
eBay
There is another set of serial pins with an empty 16C550 socket. One parallel port on bracket, and one serial port pins on card.
eBay
The PCI-E to 4-Port RS232 Serial Card is an expansion card that allows for the addition of four serial ports to a computer system. Featuring the AX99100 chip, this card provides reliable and efficient data transfer technology. With a regular form factor and a compact design, this card is compatible with a universal range of products and is ideal for expanding the connectivity options of a system. The manufacturer warranty of 1 month ensures peace of mind, and the card is designed for regular use with maximum data rates and supported transfer technologies.
eBay
COM2 Serial: Pin Interface. COM1 Serial: DB9 Port. Retro computer ISA interface card, 8086 80286 80386 80486 586 for pentium or for Celeron machine with ISA slot can be used. 1 ISA RS232 Serial and Parallel Port Card.
eBay
eBay