A computing device and a device mount. The computing device includes a device casing having a front side and a back side and the device mount has a mount end formed with a mount face sized to fit within a recessed portion of the back side of the device casing in contact with a recessed face of the back side of the device casing. The computing device includes permanent magnets to secure the computing device to the mount face by magnetic coupling between with one or more corresponding magnets in the device mount. One of the recessed face or the mount face is formed from a thermoplastic resin and includes a plurality of raised portions. The raised portions project above the recessed face or the mount face, as the case may be, and have a thickness sufficiently small that the raised portions deform under contact between the mount face and the recessed face due to force of the magnetic coupling.