Can you confirm if this keyboard and mouse also work with a unifing receiver, or only with the receiver that comes with it? I already have a mouse, so I would like to use the same receiver.
If it doesn't work for this MK270 Combo pack, then it works for the keyboard "alone", https://www.digitec.ch/fr/s1/product/logitech-k270-ch-sans-fil-claviers-401057?supplier=406802, correct?

Question

Can you confirm if this keyboard and mouse also work with a unifing receiver, or only with the receiver that comes with it? I already have a mouse, so I would like to use the same receiver. 
If it doesn't work for this MK270 Combo pack, then it works for the keyboard "alone", https://www.digitec.ch/fr/s1/product/logitech-k270-ch-sans-fil-claviers-401057?supplier=406802, correct?

Answer

The K270 keyboard (single) comes with a Unifying receiver (additional devices can then be paired), but the MK270 combos do not.

Answer

Unfortunately no it is not compatible with the unifying system. ):

Search

Question about Logitech MK270 Combo