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Small green circuit board with gold edge connector and two antenna connectors

HP

HP 588551-001 Trembler Half Mini Card 802.11 switch module

SKU CH-MSDF-8XRA6

A half-mini card switch module supporting 802.11B/G/N 1x1 wireless connectivity

  • Half Mini Card form factor fits compact slots
  • 11B/G/N wireless support covers legacy and modern networks
  • 1×1 antenna configuration provides reliable single-stream connectivity
  • Lightweight 5.1 g design adds minimal mass to mobile devices

HP Trembler Half Mini Card 802.11 module

This HP 588551-001 Trembler Half Mini Card provides 802.11B/G/N wireless connectivity in a compact form factor. It suits laptops or embedded systems that accept a half-mini card slot. The module supports a 1x1 antenna configuration for basic wireless networking needs.

Practical limits of 802.11B/G/N 1x1

The 1x1 antenna design restricts throughput to a single spatial stream, limiting maximum link rates compared to multi-stream devices. Older 802.11B and G rates reduce efficiency on modern networks. This card will not meet the needs of buyers who require higher bandwidth or multi-stream performance.

How it compares

Measured against everything we stock in Switch Modules, Transceivers & Add-Ons, at today’s prices. Recalculated every night.

Price $21.99
Cheaper than about 85% of the 1,517 comparable items (median $68.99).

Specifications

Product
Brand nameHP

Questions about this item

Which HP 588551-001 Trembler Half Mini Card version should I choose for 802.11B/G/N support?

The listed card provides 802.11B/G/N connectivity in a single 1x1 configuration, so there is only one version to select.

What does the 1x1 figure mean for real-world wireless throughput?

One transmit and one receive chain limits the link to a single spatial stream, capping maximum PHY rate at the 802.11n single-stream level.

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