Is n-draft ok?

I recently bought a Belkin wireless router/modem - using the 'N' standard.

Although my PC used to be able to connect to my old G router, using a USB wifi dongle, it doesn't recognise the new 'n' wireless network. I suspect because the dongle is about 6 years old.

I went out today to buy a PCI wifi network card, and got this:

WRL 802.11N ADAPTER PCI/NMAX EW-7727IN EDIMAX / BLUETOOTH ADAPTERI/ DATORTIKLI/ DATORTEHNIKA - TehnoVeikals

- My only issue is that it says it is WIFI, b, g and N-draft certified.

The 'draft' part worries me, is this an ok adapter to use? Or does it use some older technology that wont let me get the best speed out of my router?

Thanks, hope someone can help