In our Labs' tests, the Zyxel PL-100 HomePlug Turbo Powerline Ethernet Adapters clocked in at a consistent 29.6Mbps--slower than both the Netgear Powerline HD Ethernet Adapter's 52.7Mbps rate and the Panasonic HD-PLC's 35.4Mbps rate. While 29.6Mbps is well off Zyxel's theoretical maximum of 85Mbps, it's still more than enough for broadband Web surfing. This rate will also suffice for transmitting high-def content; HDTV peaks at 28Mbps, and the standard rate for over-the-air HD broadcasts is 19.4Mbps.
Zyxel backs the PL-100 with a two-year warranty. Telephone support requires a toll call and is available weekdays from 8 a.m to 5 p.m. PT. You can fill out a form on Zyxel's Web site and submit it to the company's support staff for help. You can also search through the knowledge base, which contained two entries regarding the PL-100 product at the time of this writing.