ASUS (RT-N13U/B) Wireless-N 300 Advance multi-Media Home Router: Fast Ethernet, 1* USB port can support 3G dongle(AT&T, T-Mobile, Verizon) or USB Printer sharing, 3 in 1 switch(Router/Repeater/Access Point) (Open source DDWRT Support)
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A DD-WRT USB print server - The Silicon Underground
How to share a printer with a DD-WRT | Full set up guide with images
Share USB printer on DD-WRT - TP-Link TL-WDR3600 N600 - YouTube