I use this class board 6 SDHC 32GB in a car audio with video. I easily spot two seasons of a series and 3 or 4 more films in DVD (VIDEO_TS folder), standard quality. No compatibility worries. I "ve made with CrystalDiskMark tests on the SD drive of my computer (a priori USB 2.0 bus): On data from 1000 MB and 5 consecutive tests for each type of test, the following results were obtained: Sequential Playback = 18.00 MB / s Sequential Write = 7077 MB / s Shuffle Blocks 512K = 17.48 MB / s Random Writing Blocks 512K = 1,011 MB / s Shuffle Blocks 4K = 2867 MB / s Write 4K Random Blocks = 0067 MB / s The results are many megabytes / secondCold not to be confused with megabits / sec (1 byte = 8 bits). When reading the encoded DVD movies on the car radio, no worries. So no complaints about this article from a quality / price ratio.
