Electrical Specifications
PCI Express M.2 Specification
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148
Revision 1.1, December 9, 2016
Table 33. Socket 2 Key B-M SATA-based SSD Adapter Pinout
Pin Signal Signal Pin
CONFIG_2 = GND 75
74 3.3V
GND 73
72 3.3V
GND 71
70 3.3V
CONFIG_1 = GND 69
68 SUSCLK(32kHz) (I)(0/3.3V)
NC 67
ADD-IN CARD KEY M
ADD-IN CARD KEY M
ADD-IN CARD KEY M
ADD-IN CARD KEY M
ADD-IN CARD KEY M
ADD-IN CARD KEY M
ADD-IN CARD KEY M
ADD-IN CARD KEY M
58 Reserved for MFG_CLOCK
GND 57
56 Reserved for MFG_DATA
NC 55
54 NC
NC 53
52 NC
GND 51
50 NC
SATA-A+ 49
48 NC
SATA-A- 47
46 NC
GND 45
44 ALERT# (O)(0/1.8V)
SATA-B- 43
42 SMB_DATA (I/O)(0/1.8V)
SATA-B+ 41
40 SMB_CLK (I/O)(0/1.8V)
GND 39
38 DEVSLP (I)
NC 37
36 NC
NC 35
34 NC
GND 33
32 NC
NC 31
30 NC
NC 29
28 NC
GND 27
26 NC
NC 25
24 NC
NC 23
22 NC
CONFIG_0 = GND 21
20 NC
ADD-IN CARD KEY B
ADD-IN CARD KEY B
ADD-IN CARD KEY B
ADD-IN CARD KEY B
ADD-IN CARD KEY B
ADD-IN CARD KEY B
ADD-IN CARD KEY B
ADD-IN CARD KEY B
NC 11
10 DAS/DSS (I/O)
NC 9
8 NC
NC 7
6 NC
NC 5
4 3.3V
GND 3
2 3.3V
CONFIG_3 = GND 1
