This page will cover the HP Jornada 710, 720 and 728.

The HP Jornada 720 (And it's modemless version, the 710) was released in 2001. The 728 joined them in 2002.
All three share most of the same hardware. The 710 and 720 differ only in the modem. The 728 has a slightly modified case, double the RAM and a higher capacity battery.

HP Support Website

Owner's manual

CPU:
Intel-built StrongARM SA-1110 running at 206 MHz.

Operating system:
Microsoft Windows CE 3.0 (Handheld PC 2000) in ROM.

Screen:
Backlit 6.5" 640x240 Passive Matrix LCD. Hitachi model SX16H003 (SX16H004 in some models). Displays 65,536 colors.

RAM:
32 megabytes ( 64 on the 728) battery backed SDRAM running at 51 MHz. User chooses how much to assign to storage and RAM.

ROM:
24 megabytes Mask ROM divided between 3 chips.

Video:
Epson S1D13506 with 512k Sanyo VRAM.

Chipset:
Intel SA-1111 companion chip.

Sound:
Philips UDA1344 providing stereo output. Internal mono speaker, microphone, external stereo headphone jack.

Modem:
Conexant RP56LD based 56k V90/K56flex modem. Jornada 710 lacks the modem and the motherboard components required for operating one.

Input:
72 key keyboard (with 11 shortcut keys plus reset button) and passive touch screen.

Expansion:
1 type-2 16 bit PCMCIA slot. 1 type 1 Compact Flash slot. 1 Smart Card reader.
RAM/ROM are on a removable daughterboard. As such, the Jornada 710 and 720 can gain the increased memory of the 728 by switching their daughterboards.

Power:
12V DC 2.5A supply. 7.2v Sony built Li-Ion battery pack. CR2032 coin cell backup battery.

Serial:
RS232 serial in the form of a dock connector on the bottom and a sync cable connector on the back.

IR:
HP IrDA at 115Kbps.

USB:
USB slave support for sync over USB. No USB host support