Probably works with some SD cards and micro SD, but does not work with my micro SD card Samsung 64 Pro to connect to my Windows XP Pro desktop appears as unformatted and therefore to format ... I said that my micro SD card Samsung 64 Pro works perfectly well in my tablet Onda V989. However my ordinary SDHC 8GB card works perfectly fine with this "card reader" connect PC Windows XP Pro desktop.
I will soon try my micro SD card with this Samsung 64 Pro "card reader" on a hybrid Windows 8 laptop to see if it is recognized without a message asking me to format it.