Information processing apparatus

An information processing apparatus of the present invention has a salt-damage-proofing means. The salt-damage-proofing means is, for example, a coating applied to a part mainly containing magnesium in a casing, a coating applied to a printed circuit board, or a coating applied to a keyboard support board mainly containing aluminum. Providing the salt-damage-proofing means allows use in an environment where the apparatus is exposed to salt-laden water or atmosphere. High visibility allows accurate and speedy recognition of much data and performing of a next operation, and high operability allows comfortable input of much data at a high speed. The information processing apparatus is connected to another electronic apparatus via a cable, exchanges information via the cable, and can continuously receive stable power from the outside for a long time.