Unknown H40641 / 031023 ISA Expansion Card

H40641 / 031023 ISA Serial Interface Card – Legacy expansion card designed for use in desktop and industrial computers. Provides a single RS-232 serial communication port for peripheral connectivity. Technical Specifications: Part Number: H40641 / 031023 Type: ISA expansion card Interface: 8-bit ISA edge connector (gold fingers) Port Type: 1 × DB9 male RS-232 serial port Chipset: UART-based serial controller (visible IC for communication handling) Functions: Provides asynchronous serial communication for devices such as modems, terminals, CNC machines, or industrial controllers Baud Rate: Standard RS-232 speeds up to 115.2 kbps (typical for cards of this type) Power Supply: Powered via ISA bus (no external power needed) Form Factor: Half-height expansion card with metal bracket Application: Legacy PC/industrial communication, peripheral interfacing Country of Manufacture: Likely USA or Taiwan (depending on OEM source) Please review pictures carefully and let us know if you have any questions!