Summary: My HP DesignJet had been getting very flaky and was printing intermittently. The HP tech suggested it was time to upgrade the network card so we bought this 635N card and all our troubles went away. It arrived on time, in perfect condition, and it worked immediately.
Summary: Of all the HP Jetdirect 635N Internal Print Servers I have ever ordered, this one is the best. It came nestled in the box like a baby condor under it's mother's wing. The instructions were clear and the device slid into the bay like pudding through a straw.
Summary: You know things have moved on in the world when your printer does GigE and IPv6! (mine is using both) Card worked out of the box, though I don't run DHCP for IPv6 so had to hand-tweak that. Only downside of this card is it's a bit pricey - you can buy networked laser printers for less these days.