Seagate ST120HM001 Product Manual page 25

Table 7 summarizes the 1.8" drive
Table 7 1.8" SATA Connector Plug Pinout
Segment Pin Function
S1 GND
S2 A+
S3 A-
Signal S4 GND
S5 B-
S6 B+
S7 GND
Spacing separates signal and power segments
P1 V
33
P2 V
33
P3 GND
P4 GND
P5 V
5
Power
P6 V
5
P7 LED Signal
Key Key
P8 Optional
P9 Optional
Notes:
[1] Ground pins 3 and 4 mate first on micro SATA backplane connectors
[2] The two V pins are unused but connected together on the drive. They can be used for a drive-in-place detection.
33
S 600 SSD P
EAGATE RODUCT
Signal and Power SATA Plug
Definition
Ground
Differential Signal Pair (Host to Drive)
Ground
Differential Signal Pair (Drive to Host)
Ground
[2]
Unused
[1]
Ground
5V power to Drive
Activity LED: Driven low to light
Keyway
Reserved for Seagate use.
Leave unconnected.
M , R . A
ANUAL EV
.
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