This is the bulk version, it does not come with any software nor driver. But most modern OS's will automatically detect this card and install the correct driver for it. If the OS does not, then do a web search for ' Realtek RTL111C Driver' and top links should link to the driver for this card. Comes with Low Profile/Half Height Bracket only being sold by Nextronicus. Might have compatibility issue with some HP and Dell computers, please check with HP or Dell first before buying this card.