USB Standard
Keyboard
Physical
characteristics
Keys
104, 105, 106, 107, 109 layout (depending
upon country)
Dimensions
(L x W x H)
18.0 x 6.4 x 0.98 in (45.8 x 16.3 x 2.5 cm)
Weight
2 lb (0.9 kg) minimum
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
Languages
38 available
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
Acoustics
43-dBA maximum sound pressure level
Environmental
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
Non-operating
vibration
4-g peak acceleration
Drop
(out of box)
26 in (66 cm) on carpet, six-drop sequence
Drop
(in box)
42 in (107 cm) on concrete, 16-drop
sequence
Approvals
UL, CSA, FCC, CE Mark, TUV, TUV GS, VCCI, BSMI, C-Tick, MIC
Ergonomic compliance
ANSI HFS 100, ISO 9241-4, and TUVGS
Kit contents
Keyboard, installation guide, warranty card, safety and comfort guide
QuickSpecs
HP Compaq dc7900 Business PC
Technical Specifications - Input/Output Devices
DA - 13029 Worldwide QuickSpecs — Version 24 — 10/30/2009
Page 46
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