This question has been answered a million times... all OEM SLP keys are only edition specific and not brand specific... only the SLIC+CERT is brand specific... so in short, use any Win7 Ultimate key.... eg. HP SLIC + HP CERT + DELL ULTIMATE KEY or HP SLIC + HP CERT + ACER ULTIMATE KEY....
Not yet sir..we only offer Lenovo, Dell, and Acer for now.. Check back again once we get more in stock.. Kiddin bro.. no HP leaks uptil now.. Stay tuned..