Key M Connector (Cn35) - AXIOMTEK MANO521 Series User Manual

MANO521 Mini ITX Motherboard
System Reset Switch
Pin 11 and 12 connect the case-mounted reset switch that reboots your computer
without turning off the power switch. It is a better way to reboot your system for a longer
life of system power supply.
HDD Activity LED
This connection is linked to hard drive activity LED on the control panel. LED flashes
when HDD is being accessed. Pin 13 and 14 connect the hard disk drive to the front
panel HDD LED, pin 13 is assigned as cathode(-) and pin 14 is assigned as anode(+).
2.4.25 M.2 Key M Connector (CN35)
The motherboard comes with one M.2 Key M connector suitable for mounting
SATA/PCIE storage card.
Pin Signal
1 GND
2 +3.3V
3 GND
4 +3.3V
5 PCIE#9_RXN
[*]
6 N/C
7 PCIE#9_RXP
[*]
8 N/C
9 GND
10 M2_LED
11 PCIE#9_ TXN
[*]
12 +3.3V
13 PCIE#9_ TXP
[*]
14 +3.3V
15 GND
16 N/C
17 PCIE#10_RXN
[*]
18 +3.3V
19 PCIE#10_RXP
[*]
20 N/C
21 GND
22 N/C
23 PCIE#10_ TXN
24 N/C
25 PCIE#10_ TXP
[*]
CN35 supports GEN2 x2 NVMe-based SSD.
[*]
support GEN3 x4 NVMe-based SSD.
Note
24
Pin Signal Pin Signal
26 N/C 51
27 GND 52
28 N/C 53
29 PCIE#11_RXN 54
30 N/C 55
31 PCIE#11_RXP 56
32 N/C 57
33 GND 58
34 N/C 59
35 PCIE#11_ TXN 60
36 N/C 61
37 PCIE#11_ TXP 62
38 N/C 63
39 GND 64
40 N/C 65
41 PERN0/SATA_B+ 66
42 N/C 67
43 PERP0/SATA_B- 68
44 N/C 69
45 GND 70
46 N/C 71
47 PETN0/SATA_A- 72
48 N/C 73
[*]
49 PETP0/SATA_A+ 74
50 PERST 75
: When the motherboard chipset is changed to Intel
1 11 21
GND
CLKREQ
REFCLKN
N/C
1 10 20
REFCLKP
N/C
GND
N/C
N/C
N/C
N/C
N/C
N/C
N/C
N/C
N/C
N/C
N/C
PEDET
+3.3V
GND
+3.3V
GND
+3.3V
M_DETECT
Board and Pin Assignments
75
74
®
Q370, these pins