sid (unstable): 5.2.9-2
buster (testing): 4.19.67-2
stretch (stable): 4.9.189-3
jessie (oldstable): 3.16.72-1

Debian GNU/Linux device driver check & report

DELL: Latitude E7440

PCI IDWorks?VendorDeviceDriverKernel
80860a04Intel CorporationHaswell-ULT DRAM Controller
80860a16Intel CorporationHaswell-ULT Integrated Graphics Controller
80860a0cIntel CorporationHaswell-ULT HD Audio Controller
80869c31Intel Corporation8 Series USB xHCI HC
80869c3aIntel Corporation8 Series HECI #0
80869c3dIntel Corporation8 Series HECI KT
8086155aIntel CorporationEthernet Connection I218-LM
80869c20Intel Corporation8 Series HD Audio Controller
80869c10Intel Corporation8 Series PCI Express Root Port 1
80869c16Intel Corporation8 Series PCI Express Root Port 4
80869c18Intel Corporation8 Series PCI Express Root Port 5
80869c26Intel Corporation8 Series USB EHCI #1
80869c43Intel Corporation8 Series LPC Controller
8086282aYesIntel Corporation82801 Mobile SATA Controller [RAID mode]ahci
80869c22YesIntel Corporation8 Series SMBus Controlleri2c-i801
808608b1Intel CorporationWireless 7260
12178520YesO2 Micro, Inc.SD/MMC Card Reader Controllersdhci_pciv3.16.0-

808608b1 is Intel Dual Band Wireless-AC 7260 and works with iwlwifi in jessie but not in wheezy. (2014-11-10T06:45:29+00:00)