A dusting tool with a handle to which two bars are attached at a certain distance from each other, with the free ends of said bars being connected to each other and with a number of spacers being disposed between said bars. Some embodiments include methods, apparatuses, and systems for a device coupled to a controller via a link; a link power management engine to alter a power state of the link based on a transaction and some knowledge of future transactions between the device and the controller; and a memory or logic to store the link power management engine. , and the difference between the glass transition point of the acrylic copolymer and the glass transition point of the acrylic copolymer being not less than 20\xb0 C.