Update documentation/asciidoc/computers/compute-module/introduction.adoc

Author: JeuneseRPi

documentation/asciidoc/computers/compute-module/introduction.adoc

@@ -203,7 +203,7 @@ Not all IO Boards work with all Compute Module models. The following table summa
 
 | <<cmio, *Compute Module IO Board version 1 (CMIO; CMIO1)*>> (2014)
 | <<cm1, CM1>>
-| 5 V through the barrel jack
+| 5 V through micro USB
 | 160 mm × 100 mm
 
 |===