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

DELL

DELL TrueMobile 1390 802.11 b/g Mini PCI Express Wi-Fi adapter

SKU CH-D6ST-QCX2N

Adds 802.11 b/g wireless networking to compatible Dell laptops via a Mini PCI Express slot at up to 54 Mbps

  • TypeM.2 Wi-FI Adapter
  • StandardsIEEE 802.11b/g
  • Wireless Data Rates54 Mbps
  • InterfaceMini PCI Express
  • Genuine Dell OEM part ensures exact fit
  • IEEE 802.11b/g standard delivers up to 54 Mbps wireless speed
  • Mini PCI Express interface fits listed Dell laptops
  • Broad model support covers Inspiron, Latitude, Precision, XPS and Vostro lines
  • Tested and guaranteed to work perfectly

Dell TrueMobile 1390 purpose

The Dell TrueMobile 1390 is a Mini PCI Express wireless adapter that supports IEEE 802.11b and 802.11g networks. It is intended for owners of compatible Dell laptops such as Inspiron, Latitude, Precision, XPS and Vostro models listed in the specifications who need a replacement or upgrade card.

802.11b/g practical limits

The adapter operates on the 802.11b and 802.11g standards with a maximum wireless data rate of 54 Mbps. It will not connect to 802.11n, 802.11ac or 802.11ax networks and cannot deliver the throughput or range of newer Wi-Fi generations.

Mini PCI Express build and fit

The card uses a Mini PCI Express connector and is a genuine Dell OEM part identified by part numbers PC559, YH774 or HR034. It fits directly into the Mini PCI Express slot of the listed Dell notebooks without adapters or brackets.

Highlights

  • Genuine Dell OEM part ensures exact fit
  • IEEE 802.11b/g standard delivers up to 54 Mbps wireless speed
  • Mini PCI Express interface fits listed Dell laptops
  • Broad model support covers Inspiron, Latitude, Precision, XPS and Vostro lines
  • Tested and guaranteed to work perfectly

Specifications

BrandDell
TypeM.2 Wi-FI Adapter
StandardsIEEE 802.11b/g
Wireless Data Rates54 Mbps
InterfaceMini PCI Express

Questions about this item

Should I pick this Mini PCI Express card or an M.2 version for my laptop?

This adapter uses the Mini PCI Express interface; check your service manual to confirm the slot type before ordering.

What does the 54 Mbps rating mean for everyday use?

54 Mbps is the maximum link speed under the 802.11g standard; real-world throughput will be lower due to overhead and signal conditions.

Does the Mini PCI Express interface limit the wireless speed?

The Mini PCI Express bus provides ample bandwidth for the 54 Mbps 802.11b/g radio, so the wireless standard remains the limiting factor.

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