A coupler for releasably mounting a computer peripheral device to another device includes a first portion operable to engage the computer peripheral device, and a second portion operable to engage the other device. Or, a computer peripheral device includes a connector for mounting the computer peripheral device to another device. With the coupler, the computer peripheral device may more securely support the other device as compared to one placing the other device on top of the computer peripheral device. Similarly, with the connector, the computer peripheral device may more securely support the other device. Furthermore, with the coupler, connector, or both, one may generate a stack including three or more peripheral devices of a computer system by mounting each additional device to an adjacent device in the stack. Thus, a housing of the computer system may support more peripheral devices.