Dell Inspiron 15 (3521, Late 2012) - Manual (Page 10)

Specifications
Views
Battery
System
Information
Memory
Ports and
Connectors
Dimensions and
Weight
Computer
Environment
Storage
Touchpad Power Adapter Camera
Communications Video Audio
Display
Media-card
reader
Keyboard
Ports and Connectors
External:
Network One RJ45 port
USB • Two USB 3.0 ports
• One USB 2.0 port
• One USB 2.0 port with Windows debugging
HDMI One HDMI port
Audio One headphone and microphone combo (headset) port
Internal:
Mini-card One full mini-card slot for Wi-Fi and Bluetooth combo card