Dell XPS 12 (9Q23, Late 2012) - Manual (Page 5)

Power Adapter
Type 45 W
Input voltage 100 VAC—240 VAC
Input current (maximum) 1.30 A
Input frequency 50 Hz—60 Hz
Output current 2.31 A
Output power 45 W
Rated output voltage 19.50 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)
Computer Environment
Temperature range:
Operating 0 °C to 40 °C (32 °F to 104 °F)
Storage –40 °C to 65 °C (–40 °F to 149 °F)
Relative humidity (maximum):
Operating 10% to 90% (non‑condensing)
Storage 10% to 95% (non‑condensing)
Maximum vibration (using a random vibration spectrum that simulates user
environment):
Operating 0.66 GRMS
Storage 1.30 GRMS
Maximum shock (Measured with hard drive in operating status and a 2‑ms half‑
sine pulse for operating. Also measured with hard drive in head‑parked position
and a 2‑ms half‑sine pulse for storage):
Operating 110 G
Storage 160 G
Altitude (maximum)
Operating –15.2 m to 3048 m (–50 ft to 10,000 ft)
Storage –15.2 m to 10,668 m (–50 ft to 35,000 ft)
Airborne contaminant level G1 as defined by ISA‑S71.04‑1985