English
3
B660M Pro RS/D5
I/O Panel
No. Description
No. Description
1
2.5G
LAN RJ-45 Port*
6
USB 3.2 Gen1 Ports (USB3_1_2)
2
Line In (Light Blue)**
7
DisplayPort 1.4
3
Front Speaker (Lime)**
8
HDMI Port
4
Microphone (Pink)**
9
BIOS Flashback Button
5
USB 3.2 Gen1 Ports (USB3_3_4) 10
USB 2.0 Ports (USB_1_2)
*There are two LEDs on each LAN port. Please refer to the table below for the LAN port LED indications.
Activity / Link LED
Speed LED
Status
Description
Status
Description
Off
No Link
Off
10Mbps connection
Blinking
Data Activity
Orange
100Mbps/1Gbps
connection
On
Link
Green
2.5Gbps connection
ACT/LINK LED
SPEED LED
LAN Port
10
9
5
7
8
1
6
4
3
2