Hello everyone, I wish you all Merry Christmas and Happy Holidays! Well,I am new here and I need your help.I did a little research on the forums,but I couldn't find anything helpful for my machine. I was looking for an internal network card with 4G LTE capabilities and I ended up with a [h=1] Sierra MC7750 Gobi4000 Mini PCI-e GSM GPRS HSPA+ LTE 100MB 3G WWAN WIFI Card GPS[/h] The problem is that I have been told in the Lenovo Forums that this card eventhough Lenovo supports the driver for my machine,it isn't compatible with it because of the BIOS whitelist.So I didn't bought it Before you start the explanations to modify the BIOS,are there any other internal networking card,except for the aforementioned one,for the Thinkpad W520 4270 CTO with 4G LTE capabilities? If not please feel free to explain! Thanks for your time.