HP dx7300 Overview page 38

QuickSpecs
Technical Specifications - Input/Output Devices
USB Standard BG1650
Keyboard (gray)
Physical
characteristics
Electrical
Mechanical
DA - 12583 Worldwide — Version 15 — September 19, 2007
Power
Power consumption
Communication
Landing mechanism
Interface modes
Reader performance
interface
Electro-magnetic
standards
Keys
Dimensions (L x W x H)
Weight
Operating voltage
Power consumption
System interface
ESD
EMI – RFI
Microsoft PC 99 – 2001
Languages
Keycaps
Switch actuation
Switch life
Switch type
Key-leveling mechanisms For all double-wide and greater-length keys
HP Compaq dx7300 Business PC
USB Port
Short circuit detection (protects smart card and
reader)
Power supply compliant with ISO7816 and EMV
(5V, 60 mA)
Supports 3-V and 5-V cards
250-mA maximum draw (50 mA for the keyboard
with three LEDs ON and 200-mA maximum
startup current using a high-current, 60-mA
smart card)
From card Programmable from
9,600 baud to 115,200
baud
From computer Up to 38,400 baud
Contact device Friction contact
Card insertions rating Up to 100,000 insertion
cycles
USB communications through USB port
SCM protocol
Automatic card insertion/removal detection
USB connection
Europe 89/336/CEE guideline
USA USAFCC part 15
104, 105, 106, 107, 109 layout (depending upon
country)
18.0 x 6.4 x 0.98 in (45.8 x 16.3 x 2. 5 cm)
2 lb (0.9 kg) minimum
+ 5VDC ± 5%
50-mA maximum (with three LEDs ON)
USB Type A plug connector
CE level 4, 15-kV air discharge
Conforms to FCC rules for a Class B computing
device
Functionally compliant
38 available
Low-profile design
55-g nominal peak force with tactile feedback
20 million keystrokes (using Hasco modified
tester)
Contamination-resistant switch membrane
Page 38