查看“MATX-6551 COM”的源代码

[[文件:MATX-6551 COM1-2，COM3-4，JCOM1-4，JCOM5-8.jpg|600px|缩略图|MATX-6551 COM1-2，COM3-4，JCOM1-4，JCOM5-8]]
===== COM1-2A： =====
{| class="wikitable"
|-
! Pin !! 信号名称 
|-
| 1 || COM1_DCD
|-
| 2 || COM1_RXD
|-
| 3 || COM1_TXD
|-
| 4 || COM1_DTR
|-
| 5 || GND
|-
| 6 || COM1_DSR
|-
| 7 || COM1_RTS
|-
| 8 || COM1_CTS
|-
| 9 || COM1_RI
|}