Newegg offers the TP-Link 5-Port Unmanaged Gigabit Ethernet Switch, model no. TL-SG1005D, for $19.46. Coupon code "EMCARAV57" cuts it to $14.99. (Amazon charges the same for Prime members.) With free shipping, that's the lowest total price we could find by $5. It features green Ethernet technology and purportedly saves up to 70% in power consumption. Coupon ends April 13.