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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

  • Product 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.

How it compares

Measured against everything we stock in Wi-Fi Cards & USB Adapters, at today’s prices. Recalculated every night.

Price $31.99
Pricier than about 74% of the 1,565 comparable items (median $18.99).

Specifications

Product
Brand nameDell
Product 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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