N500 Wireless card upgrade?

I have an N500, that came with the Broadcom b/g card.  I want to upgrade to wireless N, would like to know what cards outside of the ones available from Lenovo anyone has had luck with.
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Hello and welcome,
Lenovo laptops use a BIOS whitelist.  Wifi cards have to have a Lenovo FRU number - which means they've been modified to meet the whitelist requirements.  In other words, a generic Intel 5100 won't pass, but a 5100 with FRU 43Y6493 should.  Reputable vendors will list the FRU if a board is Lenovo-compatible.
The Hardware Maintenance Manual and the BIOS readme are the best references for what's compatible with your machine.  From the HMM:
Intel WiFi Link 5100 v 4233-CTO, 32x, 33x, 34x, 35x, 36x, 37x, 38x, 39x, 3Ax, 3Bx, 3Cx, 3Dx, 3Ex
43Y6493
Lenovo 802.11b/g Wireless LAN Mini-PCI Express Adapter v 4233-CTO
43Y6487
Lenovo 802.11b/g Wireless LAN Mini-PCI Express Adapter v 4233-CTO
43Y6480
Z.
The large print: please read the Community Participation Rules before posting. Include as much information as possible: model, machine type, operating system, and a descriptive subject line. Do not include personal information: serial number, telephone number, email address, etc.  The fine print: I do not work for, nor do I speak for Lenovo. Unsolicited private messages will be ignored. ... GeezBlog
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