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Dell · Inspiron 15

Dell Inspiron 15 3520

Everything you need to understand this laptop — core hardware, graphics, display, connectivity and practical upgrade options.

Full specificationsRAM compatibilitySSD upgrade guide
Processor

Configuration-dependent; check the exact product number in the linked manufacturer documentation.

Graphics

Configuration-dependent; check the exact product number in the linked manufacturer documentation.

RAM ceiling

Up to 16 GB listed

Storage

M.2 2230 or M.2 2280 PCIe NVMe

The complete picture

Hardware specifications

Options can vary by product number, country and factory configuration. Unknown details are labelled rather than guessed.

12 specification entries

Performance

Processor, graphics and acceleration

Processor
  • Configuration-dependent
  • check the exact product number in the linked manufacturer documentation.
Graphics
  • Configuration-dependent
  • check the exact product number in the linked manufacturer documentation.
Chipset / AI hardware
  • Configuration-dependent
  • check the exact product number in the linked manufacturer documentation.

Display & media

Screen, camera and sound

Panel
  • Configuration-dependent
  • check the exact product number in the linked manufacturer documentation.
Camera
  • Configuration-dependent
  • check the exact product number in the linked manufacturer documentation.
Audio
  • Configuration-dependent
  • check the exact product number in the linked manufacturer documentation.

Connectivity & security

Ports, wireless and protection

Ports
  • Configuration-dependent
  • check the exact product number in the linked manufacturer documentation.
Wireless
  • Configuration-dependent
  • check the exact product number in the linked manufacturer documentation.
Security
  • Configuration-dependent
  • check the exact product number in the linked manufacturer documentation.

Power & design

Battery, operating system and build

Battery
  • Configuration-dependent
  • check the exact product number in the linked manufacturer documentation.
Weight / dimensions
  • Configuration-dependent
  • check the exact product number in the linked manufacturer documentation.
Operating system
  • Configuration-dependent
  • check the exact product number in the linked manufacturer documentation.

Plan your upgrade

Possible upgrades

See the listed RAM ceiling, storage options and what each upgrade is useful for. Maximums are only shown when supported by the model information available here.

RAM upgrade

Up to 16 GB

Listed model capacity; confirm your exact configuration before buying.

SSD upgrade

Largest listed SSD: Up to 2 TB M.2 2280

Capacity shown is based on documented manufacturer options, not necessarily a hard limit. Confirm the exact configuration and connector before buying.

A verified upgrade plan is not available for this model yet.

Check before you buy

Upgrade compatibility

RAM specifications

Memory type, slots and listed capacity

Memory type
  • DDR4 SO-DIMM
  • speed varies by USB-C configuration
Slots
  • 2 SO-DIMM slots on documented configurations
Maximum listed
  • 16 GB in Dell-listed configurations

Listed configurations

4 GB8 GB12 GB16 GB listed configurations
  • Memory speed depends on the exact variant. Confirm the service tag and service manual.

SSD & storage specifications

Drive format, connection and limits

SSD
  • M.2 2230 or M.2 2280 PCIe NVMe
Largest listed SSD
  • Up to 2 TB M.2 2280
HDD
  • Optional 2.5-inch SATA HDD, up to 2 TB on compatible configurations
  • The HDD option depends on the battery and chassis configuration; not every unit has the required space and connector.

Before you order parts

  • Use the Dell service tag to confirm the memory and storage configuration.
  • Check whether your unit has an M.2 SSD or a 2.5-inch HDD before ordering parts.

Official specifications & sources

Manufacturer pages are the reference for exact configurations.