An aligning apparatus comprising: a back plane, the back plane comprising at least one back plane connector; at least one daughter card, the daughter card comprising: a lower edge, the lower edge comprising a scalloped surface proximal to a rear surface of the lower edge, and a ramped surface proximal to a front surface of the lower edge; and a daughter card connector, the daughter card connector configured to be removably connectable to the back plane connector; and at least two guide rails extending from the back plane, the guide rail comprising a rear ramp and a front ramp. A method of aligning a daughter card to a back plane, the method comprising: sliding the daughter card towards the back plane; lifting the front end of the daughter; lifting the back end of the daughter card after lifting the front end of the daughter card; and providing the back end of the daughter card with a degree of freedom to lift and lower in order to align to the back plane, after lifting the back end of the daughter card.