Only let down by being rather short for my antec case- to use all 4 screws means is not flush with the case front - so you can only use 2 of the screws. The screws also go into plastic so dont tighten too much. Putting in sd cards is not intuitive - they go in upside down. Other than these points seem capable of running my class 10,transcend 16 gb sdhc card at 20mb/s read and write. So it does its job for very little money. To use it you need a motherboard usb male socket ( small ide like) - not the normal plugs that you use for external devices. When installed it doesnt look cheap and nasty