Legacy controllers, long cable runs and boot-time access all influence which interface your industrial keyboard should use.老旧控制器、长距离布线与开机阶段访问都会影响工业键盘接口的选择。
USB HID is the default for modern PCs and embedded boards: plug-and-play, no drivers and easy to add a pointing device on the same cable.
PS/2 is still requested for legacy industrial PCs and some BIOS environments where USB support is limited.
RS-232 / RS-485 suits PLCs and microcontrollers without a USB host, and RS-485 supports cable runs beyond 100 m.
All of our keyboard controllers can be built with any of these interfaces, or with a dual USB + PS/2 output.
USB HID 是现代 PC 与嵌入式主板的默认选择：即插即用、免驱动，还可在同一根线上集成指点设备。
PS/2 仍被老式工控机以及 USB 支持有限的部分 BIOS 环境所需要。
RS-232 / RS-485 适合没有 USB 主机的 PLC 与单片机，RS-485 支持超过 100 m 的布线距离。
我们的键盘控制器均可按上述任一接口生产，也可提供 USB + PS/2 双输出。
