MacMinute readers are reporting that Apple has begun shipping Mac mini orders from the company’s online store. The Mac mini, which was introduced at Macworld Conference & Expo last week, will be made available in Apple’s retail stores this Saturday. The low-cost Mac mini comes with either a 1.25GHz ($499) or 1.42GHz ($599) G4 processor, ATI Radeon 9200 graphic card, and either a 40GB or 80GB hard drive. Both models feature a slot-load Combo drive (DVD/CD-R), one FireWire 400 and two USB 2.0 ports, a DVI interface that also supports VGA, and Airport Extreme and Bluetooh support. The Mac mini measures 2″ x 6.5″ x 6.5″.