The iPAQ H3600 is a hand-held pocket device , introduced to the market in April, 2000.
Expansion packs can provide additional flash and RAM, battery power, as well as other capabilities.
Project status is available, along with installation directions . Linux kernel sources for this device are hosted on handhelds.org and is tracking the Linux development stream as closely as possible. The Compaq Aero 1500 and 2100 series pocket and palm size PC's can run Linux via the LinuxCE project . The Itsy Pocket Computer is a research prototype developed in Compaq's Western Research Laboratory in 1998. Full specifications for Itsy V1.5 are available , including hardware design specifications.