Product specifications Processor 133 MHz 32-bit Hitachi SH3 processor Memory 16 MB RAM 16 MB ROM Display 240 x 320 pixels LCD CSTN backlit User Interface Pen-and-touch interface (stylus included) Handwriting recognition software On-screen keyboard 4 user-configurable quick launch screen icons 2 quick keys (Record and Scroll/Action) Notification LED Power Built-in Lithium-Ion rechargeable battery 8 hours of battery life (Estimated battery life. Actual battery life will vary based on usage.)
Input/Output IrDA infrared port RS232 serial port USB port CompactFlash Type 1 card slot AC input jack Stereo earphone jack Sound Audio speaker and microphone Built-in voice recorder Digital audio player compatible Hope this answers everyone's questions....you can also use it as an ereader.
it will not run wifi without a specific wi-fi card the 540 is from I think 2000 I have 3-4 of them Personal Data Assistant I keep files and notes and schedule in mine.