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Small green M.2 circuit board with gold edge connector

HP

HP RT5390 M.2 Wi-Fi adapter 638403-001

SKU CH-080E-WXC7H

M.2 Wi-Fi adapter with Ralink RT5390 chipset for laptop wireless connectivity

  • Product typeM.2 Wi-FI Adapter
  • M.2 form factor fits modern laptop slots
  • RT5390 chipset delivers wireless connectivity
  • Genuine HP part ensures system compatibility
  • New condition guarantees full operational life
  • 30-day refund window protects your purchase

HP RT5390 M.2 Wi-Fi adapter

The HP RT5390 M.2 Wi-Fi adapter is a replacement wireless card for compatible HP laptops. It uses the 638403-001 part number and fits M.2 keyed slots designed for WLAN modules. Buyers should verify the exact part number against their service manual before ordering.

Sustained operation

The adapter maintains a stable connection during typical daily workloads such as browsing, streaming and file transfers. Thermal output remains low because the module draws minimal power from the slot. No active cooling is required on the card itself.

Compatibility check

Confirm your laptop accepts the 638403-001 part number and has a free M.2 WLAN slot with the correct keying. Some models whitelist specific cards in BIOS, so check the manufacturer documentation. The package includes the card only; antennas and screws are not supplied.

How it compares

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

Price $13.99
Cheaper than about 70% of the 1,565 comparable items (median $18.99).

Specifications

Product
Product typeM.2 Wi-FI Adapter

Questions about this item

How much power does the RT5390 draw when running continuously?

The adapter uses the standard M.2 slot power budget; no separate supply is needed.

What must already be in the laptop for this card to function?

A free M.2 Key-E slot with PCIe and USB lanes, plus antenna cables routed to the cover.

Will the RT5390 work alongside a legacy mini-PCIe WLAN card kept in a second slot?

Only one Wi-Fi radio can be active at a time; disable the older card in BIOS or Device Manager.

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