Input/Output (I/O); Indicators And User Controls; External Ports; Power Management - IBM 4820 System Reference Manual

Input/output (I/O)

The 4820 SurePoint Solution allows the following I/O devices:
v Touch screen, MSR, and keypad (Model 42T only)
v RS232 I/O
v Pointing device (Model 42T only), mouse

Indicators and user controls

The 4820 SurePoint Solution provides the following indicators and user controls:
v Dual color LED:green power-on indicator; orange backlight dim
v Power on and off
v Brightness

External ports

The 4820 SurePoint Solution provides the following external ports:
v RS232 touch, keypad, MSR input: 4-pin
v Video: MDR 20-pin
v DC power input

Power management

Power management is through DPMS and complies with the VESA standard. The table
below describes the power management states.
Table 2-3. Power Management States
Operation Mode
Off
DPMS Off
DPMS Suspend
DPMS Standby
On
2-2
4820 SurePoint Solution System Reference
RS485 / Analog
5W
5W
5W
5W
20W