Power saving mode can be switched off on PA511 but SG1005D. Download the SwitchPowerSaveTool from the link as below. http://www.tp-link.com/en/support/download/?model=TL-PA511&version=V1#tbl_j

Did you try to reset them to factory defaults and repair them? To contact TP-LINK support directly, you can submit a ticket here. http://ticket.tp-link.com/index.php?/Tickets/Submit

Chris, I didn't see such a feature in PS110U's user guide.

This article may help you to make a correct decision based on your ISP bandwidth. http://www.tp-link.com/en/article/?faqid=461

You got a WPA4220KIT, right? Did you pair them? http://www.tp-link.com/en/article/?faqid=258 To login its web interface and change security settings of the network, follow this. 1. Connect WPA4220 to...

You got a WPA4220KIT, right? Did you pair them? To login its web interface and change security settings of the network, follow this. 1. Connect WPA4220 to your PC by a network cable. 2. Down and run...