Cisco CISCO1750 Installation Manual page 29

see translated versions of this warning, refer to the Regulatory
Compliance and Safety Information for the Cisco 1600 and Cisco
1700 Routers document that came with the router.)
Always connect the Ethernet cable to the yellow ports on the router.
Caution
Do not connect the cable to an ISDN S/T or U port on a WIC or to
an NT1 that is connected to a WIC. Accidently connecting the cable
to the wrong port can damage your router.
Follow these steps to connect the router to your local network:
Connect one end of the cable to the yellow Ethernet port (labeled 10/100-Mbps
Step 1
Ethernet port).
Connect the other end of the cable to a network port on the hub or switch.
Step 2
78-6169-02
Connecting the Router to Your Local Network
Cisco 1750 Router Hardware Installation Guide
iii