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Dell DW 1390 internal M.2 Wi-Fi adapter, compact green circuit board with gold edge connector

DELL

DELL DW 1390 PC559 802.11b/g 54 Mbit/s Wi-Fi adapter

SKU CH-7YG9-K1SNA

Internal 802.11b/g Wi-Fi adapter for desktop or notebook, 54 Mbit/s at 2.40 GHz

  • TypeM.2 Wi-FI Adapter
  • 11b/g standard gives reliable 54 Mbit/s wireless
  • Mini PCI Express interface fits internal laptop slots
  • 40 GHz ISM band avoids UNII restrictions
  • Internal form factor suits desktop and notebook builds
  • Dell DW 1390 part 559 ensures genuine compatibility

What this adapter is

The Dell DW 1390 PC559 is an internal M.2 Wi-Fi adapter supporting IEEE 802.11 b/g standards. It fits desktop computers and notebooks that accept a Mini PCI Express card. The module operates on the 2.40 GHz ISM band and delivers a maximum wireless transmission speed of 54 Mbit/s.

Standard compatibility check

This card only supports the 802.11 b/g standards on the 2.40 GHz band. It does not support the UNII band or newer 802.11 n/ac/ax protocols. Verify your router broadcasts a compatible 2.4 GHz b/g network before purchasing.

Sustained throughput behaviour

The 54 Mbit/s figure represents the peak PHY rate under ideal conditions. Real-world sustained throughput will be lower due to protocol overhead, interference and distance from the access point. Expect reduced speeds during large file transfers or continuous streaming sessions.

Highlights

  • 11b/g standard gives reliable 54 Mbit/s wireless
  • Mini PCI Express interface fits internal laptop slots
  • 40 GHz ISM band avoids UNII restrictions
  • Internal form factor suits desktop and notebook builds
  • Dell DW 1390 part 559 ensures genuine compatibility

Specifications

BrandDell
TypeM.2 Wi-FI Adapter

Questions about this item

What does the 54 Mbit/s speed mean once the adapter is installed?

The 54 Mbit/s figure is the maximum wireless transmission speed defined by the IEEE 802.11g standard on the 2.40 GHz band; actual throughput will be lower due to overhead and signal conditions.

What interface does the Mini PCI Express connection use and what does it limit?

The card plugs into a Mini PCI Express slot, which provides the host interface; it caps the link to the bandwidth and signalling of that single-lane interface.

What does the adapter need to fit inside a desktop or notebook?

It requires an internal Mini PCI Express slot with the correct keying and a compatible antenna cable connection for the 2.40 GHz radio.

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