Is gigabit ethernet compatible with standard ethernet

I want to buy the new (5th generation) Airport Extreme, but because it only has Gigabit ethernet ports, I'm wondering whether I'll be able to connect my cable internet modem (Time-Warner), which uses standard ethernet.
Thanks for you help!

I'm wondering whether I'll be able to connect my cable internet modem (Time-Warner), which uses standard ethernet.
Yes, you will. The ports on the AirPort are compatible with Ethernet, Fast Ethernet, and Gigabit Ethernet connections.

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