Hardware reference guide

Chapter 2: The Hardware
COM Ports On The 7535
16
7535 Hardware Reference Guide
See “Section 2.14.2 The Tether Port” on page 19 for details of the devices that can
connect to the tether port.
2.9.3 COM Ports On The 7535
The 7535 has the following COM ports:
2.10 Power Management
The 7535 is powered by a lithium-ion rechargeable battery pack. The 7535 can be
powered from external power when used with the AC adaptor. When the 7535 is
powered from the AC adaptor, it will also charge the battery pack.
An internal supercapacitor will hold charge for ten minutes to preserve the contents
of RAM while the 7535’s battery is being changed.
2.11 Turning The 7535 On And Off
To s wi tch on :
press and hold the Enter/On key for at least one second.
To s wi tch off :
press the Blue key, then press the Enter/On key. The 7535 enters a
suspended state. The contents of RAM are preserved.
2.12 Resetting The 7535
The 7535 hardware can be reset in two different ways. The first way restarts the
operating system. The second way does not load the operating system, but presents
the boot loader. The boot loader can load the operating system. It has a text-mode
console at which commands can be entered.
To reset the 7535 and restart the operating system:
COM Port Use
COM1 Tether port
COM2 Reserved (internal use only)
COM3 Console port
COM4 USB port