One embodiment includes the provision of a novel insert-and-rotate connection for a daughter card, such as in a blade computer system. The daughter card has both a card edge with a plurality of card edge contacts and a mezzanine connector spaced from the card edge. An interposer mounted on the motherboard has a card edge connector and a midplane connector in communication with the card edge connector. The card edge connector includes a socket for receiving the card edge of the daughter card with the daughter card at an acute angle to the motherboard, to avoid interference between the mezzanine connector on the daughter card and a corresponding mezzanine connector on the motherboard. Once the card edge is inserted into the socket of the card edge connector, the socket allows for rotation of the daughter card about the received card edge. The mezzanine connectors are aligned for connection in response to rotation of the daughter card about the received card edge. The contacts on the card edge also contact the corresponding socket contacts in response to the rotation of the card.