HP ProBook 6550b HP ProBook 6455b, 6555b, 6450b,and 6550b Notebook PCs - Maint - Page 185

6 Specifications Computer specifications 39.6-cm (15.6-in) models 35.6-cm (14.0-in) models Dimensions Depth Width Height (front to rear) Weight ● With WXGA display assembly, no optical drive, 320-GB, 7200-rpm hard drive, 2.55-AH battery, 1024-MB memory, no modem module, no Bluetooth module, no WWAN module, no webcam, and no fingerprint reader ● With WXGA display assembly, DVD-ROM drive, 320-GB, 7200-rpm hard drive, 2.55-AH battery, 1024-MB memory, no modem module, no Bluetooth module, no WWAN module, no webcam, and no fingerprint reader Input power Operating voltage Operating current Temperature Operating (not writing to optical disc) 24.8 cm (9.76 in) 37.1 cm (14.61 in) 3.5 to 3.9 cm (1.38 to 1.54 in) 23.6 cm (9.29 in) 33.9 cm (13.35 in) 3.4 to 3.9 cm (1.34 to 1.54 in) < 2.51 kg (5.53 lb) < 2.26 kg (4.98 lbs) < 2.64 kg (5.82 lb) < 2.39 kg (5.27 lb ) 18.5 V dc @ 3.5 A - 65 W or 19.0 V dc @ 4.74 A - 90 W 3.5 A or 4.74 A 0°C to 35°C (32°F to 95°F) Operating (writing to optical disc) 5°C to 35°C (41°F to 95°F) Nonoperating -20°C to 60°C (-4°F to 140°F) Relative humidity Operating Nonoperating 10% to 90% 5% to 95% Computer specifications 177