How about support for monitor mode and injection ? What wireless chipset are you planning on using ? Hopefully not the Marvell on the GTA04 which is not good for penetration testing. I think the best wireless chip for this project is the CW1200 chip from ST microelectronics. Here is the datasheet : http://www.calao-systems.com/reposit...ETS/CW1200.pdf Specs : -dual band 5 and 2.4 GHz -a b g n standards -host offloading of beacon and packet processing This chipset is a SoftMAC so that allows for a finer control of the hardware, allowing for 802.11 frame management to be done in software, for both parsing and generation of 802.11 wireless frames. Thus, monitor mode and injection is 100% supported. Open source driver accepted in the Linux kernel mainline with above penetration testing functionality : http://wireless.kernel.org/en/users/Drivers/cw1200 I have no connection with ST microelectronics but I think it would be IDEAL if we can use this driver because N900 can do monitor mode and if Neo900 cannot then it would be a real shame / feature downgrade and I will not be buying it personally if it does not have this feature. Maybe you can source the Azurewave NH-580 chip which has GPS / FM / BT provided by chip CG2900 and then WLAN by chip CW1200 all in one package etc. http://www.azurewave.com/product_AW-NH580_1.asp Please make an effort to get a chip like this !