Input device with integrated key plate and integrated side grips

An input device comprising:

• a housing having:
• a bottom case having a bottom surface with an alignment groove formed in the bottom surface and extending below the bottom surface, wherein the alignment grove is configured to receive into the alignment groove an alignment protrusion that extends from a surface of a charging base configured to receive the input device for charging the input device, and the alignment groove is substantially triangular to guide the alignment protrusion to the alignment groove as the input device is placed in the charging base;
• a top case connected to the bottom case, the top case including a left side grip and a right side grip being formed on a single piece component, the left side grip and the right side grip being configured to be held by a user's thumb on one side and by at least one of the user's ring finger and little finger on another side;
• and
• an upper member connected to the top case and including a palm rest configured to support the user's palm.