No, it seems that the EU directive doesn't necessarily apply to input devices other than keyboards and mice. Specifically, it states:
"The requirements in points 2 and 3 below shall apply to the following categories or classes of radio equipment:
a) handheld mobile phones,
b) tablets,
c) digital cameras,
d) headphones,
e) headsets,
f) handheld videogame consoles,
g) portable speakers,
h) e-readers,
i) keyboards,
j) mice,
k) portable navigation systems,
l) earbuds,
m) laptops
Within these categories or classes of radio equipment, only radio equipment integrating a removable or embedded rechargeable battery is concerned.
Regarding digital cameras, the concerned radio equipment is any digital photo and video cameras (including action cameras). Digital cameras designed exclusively for the audio- visual sector, or the ‘security and surveillance’ sector should not be required to integrate the harmonised solution.
Regarding earbuds, the concerned radio equipment is considered together with its dedicated charging case or box, given that earbuds are never dissociated from their charging case or box due to their specific size and shape. The charging case or box for that specific type of radio equipment is not considered as part of the charging device.
Regarding laptops, the concerned radio equipment is any computer that is portable, which include among others laptops, notebooks, ultraportables, hybrids or convertibles, netbooks."