ThinkPad T440s Ultrabook
http://shop.lenovo.com/gb/en/laptops/thinkpad/t-series/t440s/
Toshiba TECRA A50-A-1EH
http://www.toshiba.co.uk/laptops/product-filter/?sFamily=tecra&sSeries=a50
Dell Latitude 15 E5550
http://www.dell.com/uk/dfb/p/latitude-e5550-laptop/pd
HP ProBook 430 G2
http://store.hp.com/wcsstore/hpusstore/pdf/AMS_HP_ProBook_430_G2_Notebook_PC_Datasheet.pdf
HP ProBook 450 G2
http://www8.hp.com/uk/en/products/laptops/product-detail.html?oid=6943826
Toshiba Sat Pro R50-B-186
http://www.toshiba.co.uk/discontinued-products/satellite-pro-r50-b-186/
Toshiba Z30-B-10G
http://www.toshiba.eu/laptops/portege/portege-z30-b/portege-z30-b-10g/
HP Elitebook 840 G1
http://www8.hp.com/us/en/ads/elite-products/elitebook-840.html