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Appendices 105
Type PS/2, USB and VGA
USB Device Port
Number 4
Type USB 1.1
MODEM Port
Number 1
Type RS-232 serial
Connectors DB9 female
Serial Power Control (SPC) Port
Number 1
Type RS-232 serial
Connector 8-pin modular
Power Supply
Type Internal
Power
DSR1020: 11.0 W
DSR2020: 13.0 W
DSR4020: 17.3 W
DSR8020: 20.3 W
Heat Dissipation
DSR1020: 37.5 BTU/hr
DSR2020: 44.4 BTU/hr
DSR4020: 59.0 BTU/hr
DSR8020: 69.3 BTU/hr
AC-input Range 100 - 240 VAC
AC Frequency 50 - 60 Hz autosensing
AC-input Current Rating 0.5 A
AC-input Power (maximum) 40 W
AC-input Cable
18 AWG three-wire cable, with a three-lead IEC-320; receptacle on the power
supply end and a country-dependent plug on the power resource end
Table F.1: DSR1020/2020/4020/8020 Switch Product Specifications (Continued)