The name might not be totally clear—Maclocks uses several different product names on its own page—but what’s obvious is the purpose behind the company’s MacBook Pro Retina Lock Bracket ($70). It secures your 13” or 15” MacBook Pro with Retina display, making sure the computer doesn’t wander away when you get up. Because Apple has all but eliminated Kensington lock slots on its machines, third-party options…