A delivery system for delivering fluidic media to a user, the delivery system comprising: a first housing portion adapted to be carried by a user; a second housing portion configured to be selectively operatively engaged with and disengaged from the first housing portion, one of the first housing portion and the second housing portion for supporting a reservoir having an interior volume for containing fluidic media, the first housing portion and the second housing portion configured to be slidable relative to each other to operatively engage each other; and characterised by a fluid connector supported by the other of the first housing portion and the second housing portion in a position to engage the reservoir in a case where the reservoir is supported by the one of the first housing portion and the second housing portion and the first housing portion and the second housing portion are slid relative to each other to operatively engage each other; wherein the first housing portion is configured to be slidable in a first direction relative to the second housing portion at least between a first position and a second position; the first housing portion is operatively engaged with the second housing portion in case where the first housing portion is in the second position relative to the second housing portion; and the delivery system further comprises a pair of magnets (574a, 574b, 582), the pair of magnets including a first magnet supported on one of the first housing portion and the second housing portion and a second magnet (574a, 574b) supported on the other of the first housing portion and the second housing portion relative to the one of the first housing portion and the second housing portion supporting the first magnet, the first magnet and the second magnet (574a, 574b) configured to align the first housing portion and the second housing portion in a case where the first housing portion slides relative to the second housing portion to the second position and is misaligned with the second housing portion. a first housing portion adapted to be carried by a user; a second housing portion configured to be selectively operatively engaged with and disengaged from the first housing portion, one of the first housing portion and the second housing portion for supporting a reservoir having an interior volume for containing fluidic media, the first housing portion and the second housing portion configured to be slidable relative to each other to operatively engage each other; and characterised by a fluid connector supported by the other of the first housing portion and the second housing portion in a position to engage the reservoir in a case where the reservoir is supported by the one of the first housing portion and the second housing portion and the first housing portion and the second housing portion are slid relative to each other to operatively engage each other; wherein the first housing portion is configured to be slidable in a first direction relative to the second housing portion at least between a first position and a second position; the first housing portion is operatively engaged with the second housing portion in case where the first housing portion is in the second position relative to the second housing portion; and the delivery system further comprises a pair of magnets (574a, 574b, 582), the pair of magnets including a first magnet supported on one of the first housing portion and the second housing portion and a second magnet (574a, 574b) supported on the other of the first housing portion and the second housing portion relative to the one of the first housing portion and the second housing portion supporting the first magnet, the first magnet and the second magnet (574a, 574b) configured to align the first housing portion and the second housing portion in a case where the first housing portion slides relative to the second housing portion to the second position and is misaligned with the second housing portion.