Advantech AIMB-288E, User Manual

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AIMB-288E User Manual 22
2.17 COM Port Pin Header #1/#2 (COM12)
237 NC 240 +3.3V
239 NC 242 +3.3V
241 NC 244 GND
243 NC 246 NC
245 NC 248 NC
247 NC 250 GND
249 NC 252 NC
251 GND 254 NC
253 NC 256 GND
255 NC 258 NC
257 GND 260 NC
259 NC 262 GND
261 NC 264 NC
263 GND 266 NC
265 NC 268 GND
267 NC 270 NC
269 GND 272 NC
271 NC 274 NC
273 NC 276 NC
275 GND 278 +3.3V
277 NC 280 +3.3V
279 NC
281 MXM_PRSNT#
Pin Signal Pin Signal
1 COM1_DCD# 2 COM1_DSR#
3 COM1_SIN 4 COM1_RTS#
5 COM1_SOUT 6 COM1_CTS#
7 COM1_DDTR# 8 COM1_RI#
9 GND 10 GND
11 COM2_DCD# 2 COM2_DSR#
13 COM2_SIN 4 COM2_RTS#
15 COM2_SOUT 6 COM2_CTS#
17 COM2_DDTR# 8 COM2_RI#
19 GND 20 GND