Protective cover and electronic device therewith

An electronic device, comprising:

• a casing whereon a containing slot is formed;
• an electronic component disposed inside the containing slot;
• and
• a protective cover disposed on the casing for covering the containing slot, the protective cover comprising:
• a base comprising a sliding portion in an axis direction of the base;
• a first member comprising a first sliding slot and a first fixing portion, the first fixing portion being fixed on the casing, the first sliding slot cooperating with the sliding portion to make the first member slide on the base in the axis direction between a position the first member overlapping the base and a position the first member being stretched out from the base, so as to adjust a length of the protective cover;
• and
• a second member disposed on the base, the second member comprising a second fixing portion for being fixed on the casing.