Dell Inspiron 15 (3520, Mid 2012) - Manual (Page 5)

Media-card reader
Type one 3-in-1 slot
Cards supported • Secure-digital (SD) memory card
• Memory Stick
• MultiMedia Card (MMC)
Touchpad
X/Y position resolution
(graphics table mode) 240 cpi
Size
Height 46.00 mm (1.81 inches) sensor-active area
Width 90.00 mm (3.54 inches) sensor-active area
Backlit keyboard
Number of keys • 86 (U.S. and Canada)
• 87 (Europe and Brazil)
• 90 (Japan)
Battery
6-cell “smart” lithium ion
Height 20.20 mm (0.80 inch)
Width 208.36 mm (8.20 inches)
Depth 56.52 mm (2.23 inches)
Weight 0.33 kg (0.73 lb)
Voltage 11.1 VDC
Charge time
(approximate) 4 hours (when the computer is turned off)
Operating time battery operating time varies depending on
operating conditions and may reduce significantly
under certain power-intensive conditions
Coin-cell battery CR-2032
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