详细信息：

• Four COM ports for APAX controller with PCI interface
• COM1, COM2: RS-422/485
• COM3, COM4: RS-232/422/485
• Baud rate: 50 bps ~ 230.4 kbps
• 15 kV ESD protection
• 2500 VDC EFT protection
• 2500 VDC isolation protection (between COM ports and backplane)
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