HP ProBook 4320s, 4321s, 4420s, and 4421s Notebook PC

eSATA/USB
Pin Signal
1 USB +5 VDC
2 USB Data -
3 USB Data +
4 USB Ground
S1 eSATA Ground
S2 eSATA Transmit Data A+
S3 eSATA Transmit Data A-
S4 eSATA Ground
S5 eSATA Receive Data B-
S6 eSATA Transmit Data B+
S7 eSATA Ground
eSATA/USB 155