So now we know that part #'s KG298AA is now being sold under 463955-001 and here is the info exactly off the HP's master reference guide list: "90W AC Smart Tip power supply adapter - 100-240VAC input, 47-63Hz - 19.0VDC output, 4.74A, 90 watts, with power factor correction (PFC) - Includes smart tip dongle."

I went through and sorted the working list of laptops into something more reading friendly. If this information can help even just 1 person, then it'd be all worth it and my job is done. *Don't forget that 463955-001 is now the correct notebook ac part number for all of the laptop computer models and series below:

Compaq Presario A900 C700 CQ50-100 CQ60-100 CQ60-200 CQ60-300 CQ61-100 CQ70-100 CQ70-200 CQ71-100 F500 F700 V6500 V6600 notebooks.

HP HDX X16-1000 X16-1100 X16-1200 and HP G50-100 HP G6000 HP G60-100 HP G60-200 HP G7000 HP G70-100 HP G70-200 models use this 90W AC.

HP Pavilion dv2700 dv2800 dv6700 dv9700 dv2-1000 dv2600 dv2800 dv3-2000 dv3500 dv3600 dv4-1200 dv5-1000 dv5-1100 dv5-1200 dv6-1000 dv6-1100 dv6500 dv6600 dv6800 dv6900 dv7-1000 dv7-1100 dv7-1200 dv7-2000 dv9600 dv9800 tx1300 tx2000 tx2100 tx2500 tx2600 series models now use these laptop ac adapters.

I was also surprised to find out that this particular laptop ac adapter is also the new standard p/n for HP Mini Note and HP Mini 1100 series, HP TouchSmart tx2-1100 model and the HP G3200 notebook series.

If you need just the dongle adapter connector itself, you'll have to search and order hp compaq part number 414136-001. Bad news is the dongle is only available online (I would suggest trying eBay first) but on a good note, it is very cheap... costing no more than $5 shipped.

UPDATE AS OF 2/25/2011: Once again, HP has updated it's part number system and now this laptop ac adapter goes under 613153-001 but still is compatible with the same notebooks.