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I have inhertited a Hi-Grade R5400S Laptop which I would like to upgrade and give to my nephew.The machine is a Pentium 4 CPU 2.50GHz with 640 MB RAM and has XP Pro SP1 installed. My main problem is that the wireless LAN card has been removed and I would like to install a new one. From my research I think it should have a 11Mbps Wireless Lan Mini PCI Card installed. However all the cards I look at on the internet with this spec don't seeem to have the right connector. It would appear that the connector is about 1cm wide. Also I would like to increase the RAM can anybody avise please? Thanks Balabio

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Instead of trying to replace the wireless card which may be awkward to find an exact match, I would recommend finding an inexpensive Type 1 or 2 PC-CARD / PCMCIA Card (Not express card). You can pickup an inexpensive WiFi B/G Card which will work fine.

Good Luck

Posted on Apr 25, 2010

  • Meowmmm Apr 25, 2010

    As for the ram, it's hard finding the full specification for that computer. The base unit came with 128MB which seems to have been soldered directly to the motherboard.

    I have included a link to an advertizement, but it is hard to say if this is the 'Exact' model that you have.

    From the advertizement, it would appear that you only have one memory socket available, and I am guessing that you have a 512MB Dimm and are maxed out at 640MB which is higher than the add says. It also says that processor is 2.0ghz, so your computer is definately a slightly different model. However back then most computers maxed out at 512MB. Some really High End Notebooks could support 1GB, but they were rare for a while.

    You could try contacting the manufacturer, but they may not know and do not list support for it.

    Good Luck again



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