Asustek Computer is set to launch its long promised all-in-one Eee Top tomorrow, according to reports, with two versions of the so-called nettop already listed on the manufacturer’s website – the ET1602 and ET1603. Both models sport a slender 15.9-inch touch screen, a 160GB hard disk, Microsoft Windows XP and have a 1.6GHz Intel Atom microprocessor inside.

The ET1602 will supposedly start at $499 and should feature a 160GB hard disk drive, 1GB of RAM, 802.11n wireless connectivity, a 1.3-megapixel webcam, two 4-watt speakers and several choices of ports including USB and three audio ports. The higher-end ET1603 shares essentially the same specs but also packs an ATI HD3450 graphics card and a battery for mobile use.

No pricing or availability details are mentioned but Engadget speculates a launch in the U.S. soon after seeing its wireless keyboard slip through the FCC yesterday.