HP Mini Wi-Fi PCIe RT5390 802.11bgn 1x1 WLAN Card - Compact Wireless

In this review the HP Mini Wi-Fi PCIe RT5390 802.11bgn 1x1 WLAN Card is assessed as a straightforward internal network upgrade for older laptops and small form factor systems. The bottom line: it is aimed at users who need a simple, compatible replacement or upgrade to regain basic 2.4 GHz Wi-Fi connectivity. Our review finds the card delivers reliable legacy 802.11b/g/n performance and easy fitment in compatible PCIe Mini slot devices, making it a practical choice when you want a no-frills wireless card that restores networking without unnecessary extras.

Key Features

• PCIe Mini form: Installs in compact laptop and small PC Mini PCIe slots for an internal wireless solution without external adapters.
• 802.11b/g/n support: Provides broad legacy compatibility for 2.4 GHz networks so older routers and devices remain usable.
• 1x1 MIMO design: Offers a simple antenna configuration that balances power consumption and steady basic throughput for web, email, and light streaming.
• HP OEM part: Matches OEM standards and connectors for HP laptops and systems, reducing driver and fit issues on supported models.
• Compact and low profile: Its small size makes it convenient for compact systems where space and thermal headroom are limited.

Who It's For

This card is best for owners of older HP laptops or compatible notebooks who need to replace a failed internal WLAN module or add simple wireless capability to a legacy machine. It fits users who prioritize compatibility and stable 2.4 GHz connectivity over modern multi-band speeds, and who are comfortable opening a laptop or mini PC to swap internal components.

It is not the right choice for users who require dual-band 5 GHz support, advanced MU-MIMO performance, or the fastest modern Wi-Fi standards. Gamers, heavy streamers, and those who need the latest wireless security features should look for a newer dual-band or Wi-Fi 6 card instead.

Pros & Cons

Pros

• Reliable legacy 802.11b/g/n connectivity that restores basic wireless functions to older systems.
• Compact PCIe Mini form factor designed to integrate cleanly into compatible laptops and small PCs.
• OEM HP compatibility reduces the likelihood of connector or driver mismatch on supported machines.

Cons

• Limited to 2.4 GHz and 1x1 throughput, so it cannot match modern dual-band speeds or advanced features.

Specifications

Product name	HP Mini Wi-Fi PCIe RT5390 802.11bgn 1x1 638403-001 WN6605RH V01
Brand	HP
Interface	PCIe Mini Card
Wireless standards	802.11b/g/n (2.4 GHz)
Antenna configuration	1x1
Typical use	Internal WLAN card for laptops and small form factor systems

Our Verdict

The HP Mini Wi-Fi PCIe RT5390 is a pragmatic, value-focused internal WLAN card for those restoring wireless to older HP or compatible laptops. It excels at providing dependable 2.4 GHz connectivity in a compact, OEM-friendly package, but buyers needing faster dual-band links or modern features should opt for a newer card. For basic browsing, email, and light streaming on legacy systems, it represents a sensible and economical upgrade.

Frequently Asked Questions

Will this card fit any laptop?
This card fits devices with a PCIe Mini slot and compatible antenna connectors; confirm your laptop uses a Mini PCIe WLAN module before purchasing.

Does it support 5 GHz networks?
No, the RT5390 is limited to 2.4 GHz 802.11b/g/n operation and does not support 5 GHz bands.

Are drivers required?
Yes, compatible drivers are needed for the operating system; using HP or Realtek drivers for the RT5390 series is recommended for stable operation.