Suitable for Senseo ONLY: HD7820, 7822, 7823, 7824, 7825, 7827, 7830, 7835, 7841, 7842, 7860, 7863, 7880, 7884.
NOT SUITABLE Senseo HD7800, 7805, 7810, 7811, 7812, 782, 7840, 7850, 7852, 7853, 7854, 7855, 7856, 7857, 7864, 7870, 7872, 7873, 7874
... And thus HD7817.
I would have appreciated that Philips mention on the packaging !!!