Dell Inspiron 14 (3420, Mid 2012) - Manual (Page 4)

Storage
Interface SATA1/SATA2
Number of drives one
Dimension 63.5 mm (2.5 inches)
AC Adapter
Type 65 W/90 W
Input voltage 100 VAC-240 VAC
Input current (maximum) 1.50 A/1.60 A/1.70 A
Input frequency 50 Hz-60 Hz
Output current (continuous)
65 W 3.34 A
90 W 4.62 A
Output power 65 W/90 W
Rated output voltage 19.50 +/- 1 VDC
Temperature range
Operating 0 °C to 40 °C (32 °F to 104 °F)
Storage –40 °C to 70 °C (–40 °F to 158 °F)
Media-card reader
Type one 3-in-1 slot
Cards supported • Secure-digital (SD) memory card
• Memory Stick
• MultiMedia Card (MMC)
Backlit keyboard
Number of keys • 86 (U.S. and Canada)
• 87 (Europe and Brazil)
• 90 (Japan)