Drivers for HP LaserJet Pro 400 Printer M401dne

Hi

Product page: http://store.hp.com/UKStore/Merch/Product.aspx?id=CF399A&opt=B19&sel=BPRN

I am thinking of buying this printer so it can be shared between a group of about 5 staff. I usually download and store drivers for printers etc on the network and install them from there but am unable to find any sort of link from which I can download 32/64 bit drivers for this product.

I need the specific drivers, not the UPD. The UPD is fine for generic print jobs but does not work with certain software.

Each time I try to find a driver for this device the links form a circle and simply send you back and forth between the same pages.

I am starting from this page:

http://h20565.www2.hp.com/portal/site/hpsc/template.PAGE/public/psi/swdHome?sp4ts.oid=5307051&ac.adm...

Can anyone provide a link to both the 32 and 64 bit Windows drivers for this product, please?

Thanks!