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

DELL

DELL DW 1490 Wi-Fi Adapter 802.11a/b/g 54 Mbit/s

SKU CH-9GYH-TZFEE

Internal Mini PCI Express Wi-Fi adapter supports 802.11a/b/g at 54 Mbit/s on 2.40 and 5 GHz bands

  • Electrical Outlet Plug TypeWi-Fi Adapter
  • Dual-band 2.40 GHz and 5 GHz coverage for flexible network access
  • 54 Mbit/s data rate supports everyday wireless tasks
  • Mini PCI Express form factor fits compatible notebook slots
  • IEEE 802.11 a/b/g standard connects to legacy and current routers
  • Dell JC977 part ensures correct match for supported notebook models

Dell DW 1490 Mini PCIe Wi-Fi Adapter

The Dell DW 1490 is an internal Mini PCI Express wireless card designed for notebook computers. It supports IEEE 802.11a/b/g standards on both 2.40 GHz and 5 GHz bands. This adapter suits users repairing or upgrading a compatible Dell laptop that requires the specific JC977 part number.

Passive thermal design with low power draw

The card operates without a fan or heatsink, relying on the notebook chassis for passive cooling. It produces no audible noise during operation. Power consumption is minimal, drawing only the small current required for 54 Mbit/s wireless transmission across supported frequency bands.

Steady throughput within legacy bandwidth limits

Under sustained load the adapter maintains a consistent connection up to its rated 54 Mbit/s ceiling. It does not throttle due to heat because the low-throughput design generates negligible thermal output. The link remains stable for typical legacy networking tasks such as web browsing and email.

Highlights

  • Dual-band 2.40 GHz and 5 GHz coverage for flexible network access
  • 54 Mbit/s data rate supports everyday wireless tasks
  • Mini PCI Express form factor fits compatible notebook slots
  • IEEE 802.11 a/b/g standard connects to legacy and current routers
  • Dell JC977 part ensures correct match for supported notebook models

Specifications

BrandDell
Electrical Outlet Plug TypeWi-Fi Adapter

Questions about this item

How do I install the DW 1490 Mini PCI Express card in my notebook?

Power off the notebook, remove the battery, open the Mini PCI Express slot cover, insert the JC977 card at an angle, press down until it clicks, secure the screw, attach the antenna cables to the connectors, replace the cover and battery, then install the driver.

What maintenance will the DW 1490 adapter need over time?

The DW 1490 has no moving parts and requires no scheduled maintenance; if the antenna cables loosen or the Mini PCI Express connector oxidises, reseating the card and cables restores the link.

What limits the DW 1490 during sustained 54 Mbit/s transfers?

The IEEE 802.11a/b/g radio tops out at 54 Mbit/s, so prolonged heavy traffic saturates the PHY rate and latency rises before any thermal throttle appears.

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