Abstract: A computer comprising a casing forming an outer appearance and having a main board attaching surface to which a main board is attached, further comprises a main board supporting unit provided on the main board attaching surface so as to support the main board, the main board supporting unit comprising a holder having a locking part, slidably combined to the main board attaching surface, and preventing the main board attached onto the main board attaching surface from moving; and a guiding part formed on the main board attaching surface at a position spaced from the main board so as to guide the holder, the locking part being locked to the guiding part.

Abstract: A computer, including a casing forming an outer appearance and having a main board attaching surface to which a main board is attached, further includes a main board supporting unit provided on the main board attaching surface to support the main board, the main board supporting unit including a holder having a lock, slidably combined to the main board attaching surface, and preventing the main board attached onto the main board attaching surface from moving; and a guide formed on the main board attaching surface at a position spaced from the main board to guide the holder, the lock being locked to the guide.

Abstract: A computer including a casing mounted with an auxiliary memory unit having at least one fixing hole. The computer also comprises a fixing bracket accommodating and supporting the auxiliary memory unit, and having a through hole corresponding to a fixing hole of the auxiliary memory unit. A fixing member of the computer has a fixing projection inserted into the through hole of the fixing bracket and the fixing hole of the auxiliary memory unit to fasten the auxiliary memory unit on the fixing bracket. Thus, the computer has an auxiliary memory unit that is removably fastened on a fixing bracket without a screwdriver.

Abstract: A computer including a casing mounted with an auxiliary memory unit having at least one fixing hole. The computer also comprises a fixing bracket accommodating and supporting the auxiliary memory unit, and having a through hole corresponding to a fixing hole of the auxiliary memory unit. A fixing member of the computer has a fixing projection inserted into the through hole of the fixing bracket and the fixing hole of the auxiliary memory unit to fasten the auxiliary memory unit on the fixing bracket. Thus, the computer has an auxiliary memory unit that is removably fastened on a fixing bracket without a screwdriver.

Abstract: A structure for mounting electronic devices to a main body of a computer is disclosed. The structure has a chassis, a first device holder, a second device holder and a strut. The chassis has a first vertical plate, a second vertical plate and a bottom connecting the first and second vertical plates to each other. The first device holder is positioned in the chassis and near the first vertical plate. The second device holder is positioned in the chassis, near the first vertical plate and parallel with the first device holder. The strut is secured to the first vertical plate at its first end and to the second vertical plate at its second end while traversing over the chassis, and is engaged with and retains the first and second device holders.