- RS-232 ports : 2
- COM3 : TXD, RXD, RTS, CTS, GND
- COM4 : TXD, RXD, GND
- 16550 compatible
- Internal FIFO : 16 bytes for each COM port
- Transmission speed: 115.2K BPS max.
- Isolated : none
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2-Port RS-232 (3-Pin )
Bo mạch mở rộng 2-cổng RS-232 ( 3-chân ) ICP DAS X502
| X502 | 2-Port RS-232 ( 5-Pin ) and ( 3-Pin) |
| X502 CR | 2-Port RS-232 ( 5-Pin ) and ( 3-Pin) (RoHS) |