QuickSpecs
HP ProDesk 490 G2 Microtower Business PC
Technical Specifications - Input/Output Devices
Worldwide — Version 1.8— May 22, 2014
Page 51
HP USB Keyboard
Physical characteristics
Keys
104, 105, 106, 107, 109 layout (depending upon country)
Dimensions (L x W x H)
18.12 x 6.47 x 0.96 in (46.03 x 16.43 x 2.44 cm)
Weight
2 lb (0.9 kg)
Electrical
Operating voltage
+ 5VDC ± 5%
Power consumption
50-mA maximum (with three LEDs ON)
System interface
USB Type A plug connector
ESD
CE level 4, 15-kV air discharge
EMI - RFI
Conforms to FCC rules for a Class B computing device
Microsoft® PC 99 - 2001
Functionally compliant
Mechanical
Keycaps
Low-profile design
Switch actuation
55-g nominal peak force with tactile feedback
Switch life
20 million keystrokes (using Hasco modified tester)
Switch type
Contamination-resistant switch membrane
Key-leveling mechanisms
For all double-wide and greater-length keys
Cable length
6 ft (1.8 m)
Microsoft PC 99 - 2001
Mechanically compliant
Environmental
Acoustics
43-dBA maximum sound pressure level
Operating temperature
50° to 122° F (10° to 50° C)
Non-operating temperature
-22° to 140° F (-30° to 60° C)
Operating humidity
10% to 90% (non-condensing at ambient)
Non-operating humidity
20% to 80% (non-condensing at ambient)
Operating shock
40 g, six surfaces
Non-operating shock
80 g, six surfaces
Operating vibration
2-g peak acceleration