microSD cards

Eleven microSD cards and adapters arrived in the mail and now it's time to test them! Each card's true capacity, read speed and write speed was verified using the H2testw storage test. Results are summarized below where the red line drawn on each box plot indicates the threshold. A potential speed bias caused by slow adapters was eliminated using the Surface Pro 3's built-in microSD port and adapters were tested separately by copying a 2.3 MB file of random text from a computer to a functional card using the adapter.