SM-B79
SM-B79 User Manual - Rev. First Edition: 1.0 - Last Edition: 1.0 - Author: A.R - Reviewed by M.B. - Copyright © 2021 SECO S.p.A.
46
3.3.8
S-ATA connectors
According to SMARC
®
Rel. 2.1.1 specification, SMARC
®
module can offer only one
SATA interface, but there are plenty of different devices that the customer could use.
For this reason, on SM-B79 carrier board are available both a standard SATA Male
7 poles connector CN34 with dedicated power connector CN37 (par.3.3.9) and an
M.2 Slot for SSD on M.2 Socket 2 Key B form factor.
The connector used for the M.2 SSD slot is CN35,
which is a standard 75 pin M.2 Key B connector,
type LOTES p/n APCI0087-P001A, H=8.5mm, with
the pinout shown in the table on the left.
On the SM-B79 carrier board there is also a Threaded
Spacer which allows the placement of M.2 Socket 2
Key B SSD modules in 2230, 2242 or 2260 size.
M.2 SSD Slot (Socket 2 Key B type 2230/2242/2260) CN35
Pin Signal
Pin Signal
1
---
2
+3.3V_RUN
3
GND
4
+3.3V_RUN
5
GND
6
---
7
---
8
---
9
---
10
---
11
GND
20
---
21
---
22
---
23
---
24
---
25
---
26
---
27
GND
28
---
29
---
30
---
31
---
32
---
33
GND
34
---
35
---
36
---
37
---
38
---
39
GND
40
---
41
42
---
43
SATA_RX-
44
---
45
GND
46
---
47
SATA_TX-
48
---
49
50
---
51
GND
52
---
53
---
54
---
55
---
56
---
57
GND
58
---
59
---
60
---
61
---
62
---
63
---
64
---
65
---
66
---
67
---
68
---
69
SATA_M2_SELECT#
70
+3.3V_RUN
71
GND
72
+3.3V_RUN
73
GND
74
+3.3V_RUN
75
---