Jetway Computer JBC231C9P-2550 - Manual (Page 16)

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(3) PWR (4-pin): SATA Power Out Connector
P in1
P in N o. De fin it io n
1 +1 2 V
2 G N D
3 G N D
4 VC C
(3) SATAII Port: SATA1, SATA2, SATA3, SATA4, SATA5
These connectors are high-speed SATAII ports that support 3 GB/s transfer rate.
Pin No. Definition
1 GND
2 TXP
3 TXN
4 GND
5 RXN
6 RXP
7 GND