Apple AirPort Time Capsule 802.11n (3rd Generation) - Manual (Page 15)

Chapter 2 Setting Up Your Time Capsule 15
Using Time Capsule to create a wireless network
To set it up:
1 Connect your DSL or cable modem to your Time Capsule using the Ethernet
WAN (< ) port.
to Internet
DSL or cable modem
Internet WAN port <
Shared printer
Time Capsule
to USB port
2.4 GHz 2.4 or 5 GHz
2.4 or 5 GHz