On top of each is an array of LED lights that show the activities of the ports, the power, and the security status. They also, however, come with a detachable base for vertical positioning. The adapters have rubber feet on the bottom and can lay flat on any surface. Cisco says the adapters have built-in mechanism to protect themselves from a power surge. Like all HomePlug AV adapters, the PLK300 kit is finicky with power strips and surge protectors and needs to be plugged into the wall directly. Instead, they come with a thin, detachable power cable that not only helps keep the wall socket area clear, but also enables you to put the adapters at a convenient location, like on your desk.
To make up for the large physical size, neither uses the popular snap-in design to connect to the power receptacle, where the adapter would cover the wall socket it's connected to and even adjacent ones. Both are fairly bulky, about the size of a small four-port hub. Though it includes only one port, the PLE300 has the same shape and size as the four-port PLS300.
This also means that if you want to expand your powerline network to different corners of the house, you need only purchase additional PLS300 units-which cost $95 each-or another HomePlug AV-compatible adapter. This combination makes sense as if both of them had the same number of ports any extra ports on the first unit (PLE300) would be wasted.
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