Intel Desktop Board DB85FL Technical Product Specification
46
Table 19. Processor, Front, and Rear Chassis
(4-Pin) Fan Headers
Pin
Signal Name
1
Ground
(Note)
2
+12 V
3
FAN_TACH
4
FAN_CONTROL
Note: These fan headers use Pulse Width Modulation control for fan speed.
Table 20. Chassis Intrusion Header
Pin
Signal Name
1
Intruder#
2
Ground
Table 21. TPM Header
Pin
Signal Name
Pin
Signal Name
1
PCICLK
2
GND
3
FRAME
4
Key (no pin)
5
PCIRST
6
N/C
7
LAD3
8
LAD2
9
VCC3
10
LAD1
11
LAD0
12
GND
13
N/C
14
N/C
15
3VSB
16
SERIRQ
17
GND
18
CLKRUN
19
PWRDWN
20
N/C
2.2.2.2
Add-in Card Connectors
The board has the following add-in card connectors:
•
One PCI Express x16 (3.0/2.x/1.x)
•
Two PCI Express x1 (2.x/1.x)