A handheld computing device may include a housing having a base and a sidewall connected to a periphery of the base, the sidewall having an input/output port configured to accommodate connection to a peripheral device, and a retainer bracket connected to the housing and positioned proximate to the port. The retainer bracket includes a frame having a top plate and opposing side plates and being configured to secure a dock connector between the frame, the base, and the sidewall having the port.