What to do if the computer serial port is not enough？

Multiple serial ports are needed in many situations, such as industrial control, automation, etc., but usually computers only have 1-2 (computers with serial ports are not common now), so multi-serial cards are used to solve the problem of insufficient computer serial ports, I will recommends an STC PCI-E to 4-port RS-232 serial port card for everyone today.

This multi-serial card is designed for financial industry equipment such as banks, securities, supermarkets, etc. Users can not only expand 4 serial ports through the PCI-E slot of the host, but also change the serial port number according to needs. All serial ports RS232 signal has built-in +/-15 KV ESD protection, which is the most reliable and high-performance solution for serial multi-port communication.

This serial port card is equipped with 4 standard RS-232 serial ports to realize simultaneous communication of multiple serial device ports. The communication rate of each serial port can reach 921.6Kbps. It is completely independent of 4 asynchronous serial ports. It is compatible with 16C550, 16C552, 16C554 and 16C750 and has certain features. Enhanced and widely used to connect terminals, modems, printers, scanners, cash registers, bar code readers, keyboards, digital displays, electronic scales, data acquisition equipment and other serial devices to PCs and compatible systems.

The STC PCI-E to 4-port RS-232 serial port card can realize power supply for pin 1/9 of the DB9 serial port without adding an external power supply, making it convenient for users to connect serial devices. Three states can be set through jumpers: A. Power supply for pin 1: (DCD, +5V, +12V) B. Power supply for pin 9: (RI, +5V, +12V), generally it can be a password keyboard or a gold card Power supply for keyboard, scanner, external LED display and other equipment.

Continuing the super durability advantage of the STC serial port card, its storage temperature range reaches -25 to 85°C, and the operating temperature is between 0 ~ 55°C, which can easily cope with harsh outdoor environments. It adopts PCI-Express X1 bus design and can be connected to the host PCI-Express 2x, 4x, 8x, and 16x slots respectively. Equipped with short iron pieces, it can be used in both large and small chassis.

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