A recording system comprising: a first housing which holds a recording portion configured to perform recording on a recording medium on the inside thereof, and supports a discharge roller pair configured to discharge the recording medium onto which the recording has been performed by the recording portion; a second housing which is disposed on an outer side of the first housing; a third housing which holds a first post processing portion configured to perform first post processing on the inside thereof; a first linking portion configured to regulate a position of the second housing with respect to the first housing, and to link the first housing and the second housing to each other, wherein the first linking portion is connected to one of the first housing and the second housing, and the first linking portion is connectable to the other of the first housing and the second housing so as to fix a position of the second housing with respect to the first housing; and a second linking portion configured to regulate a position of the third housing with respect to the second housing, to apply a load received from the third housing to the second housing, and to link the second housing and the third housing to each other, wherein the second linking portion is connected to one of the second housing and the third housing, and the second linking portion is connectable to the other of the second housing and the third housing so as to fix a position of the third housing with respect to the second housing, characterized in that the third housing supports a transport roller pair configured to receive the recording medium discharged by the discharge roller pair and to transport the recording medium to the first post processing portion side, and the first housing is arranged on top of the second housing. a first housing which holds a recording portion configured to perform recording on a recording medium on the inside thereof, and supports a discharge roller pair configured to discharge the recording medium onto which the recording has been performed by the recording portion; a second housing which is disposed on an outer side of the first housing; a third housing which holds a first post processing portion configured to perform first post processing on the inside thereof; a first linking portion configured to regulate a position of the second housing with respect to the first housing, and to link the first housing and the second housing to each other, wherein the first linking portion is connected to one of the first housing and the second housing, and the first linking portion is connectable to the other of the first housing and the second housing so as to fix a position of the second housing with respect to the first housing; and a second linking portion configured to regulate a position of the third housing with respect to the second housing, to apply a load received from the third housing to the second housing, and to link the second housing and the third housing to each other, wherein the second linking portion is connected to one of the second housing and the third housing, and the second linking portion is connectable to the other of the second housing and the third housing so as to fix a position of the third housing with respect to the second housing, characterized in that the third housing supports a transport roller pair configured to receive the recording medium discharged by the discharge roller pair and to transport the recording medium to the first post processing portion side, and the first housing is arranged on top of the second housing.