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They're in the Clover pack available in my 7490 guide. What are the PCI ids of the TouchPad/TrackPoint models fitted to your 7480? On the 7490: TouchPad = 1028:081c (Dell-renamed Alps) TrackPoint = 044e:1212 (Alps)

It is already in this forum:

Chameleon Guide Target OS X release: Yosemite 10.10.2 The specs: BIOS A13 (needs HDD set to AHCI mode) Intel QM87 Express chipset Intel i7-4800MQ 2.69GHz quad-core Haswell-MB CPU -> needs Haswell-patched kernels integrated Intel HD4600 GPU (PCI ven id 0x8086, dev id 0x0416) discrete Nvidia Quadro K3100M GPU (PCI ven id 0x10de, dev id 0x11b6)17" 1920x1080 WideScreen LCD 16GB DDR3L-1600 RAM Intel i217-LM Gigabit Ethernet (PCI ven id 0x8086, dev id 0x153a) Realtek ALC3226 High Def audio (PCI ven id 0x8086, dev id 0x8c20) Intel wireless card 7260 (PCI ven id 0x8086, dev id 0x08b1 - unsupported) + Bluetooth 4.0 (PCI ven id 0x8087, dev id 0x07dc) Sonix Technology integrated HD webcam (USB internal, PCI ven id 0x0c45, dev id 0x64d2) O2 Micro SD card reader (PCI ven id 0x1217, dev id 0x8520) CD/DVD drive 1 x headset port 1 x mic port 1 x eSata/USB 2.0 port 4 x USB 3.0 1 x VGA 1 x HDMI 1 x DisplayPort 1 x 34mm ExpressCard BIOS Settings: Set BIOS to default. Then set SATA Operations to AHCI. Disable "Enable Switchable Graphics" Working: Full QE/CI with Nvidia Quadro K3100M (LVDS display) Wireless (Replaced with supported device) HDMI Video/ DP Video HDMI Audio with HDMIAudio.kext v1.0 ( Stop working after sleep and will require a reboot to work again) Internal Speaker/Headphone/Mic USB 3.0/USB 2.0/eSata Ports SD Card Reader DVD Player Webcam LAN WIP: HDMI Audio Fixed Sleep/Wake (not with LID close). Wake to blank screen unless AC is connected before wake. Not Working: ExpressCard SmartCard Reader Step 1: Prepare Bootable USB Drive Follow step #2 of guide here to create the Yosemite USB Installer Note: Add the patched Haswell Kernel (10.10.2) Step 2: Install OS X Yosemite Follow steps #3 from same guide above Note: Boot from the eSata/USB 2.0 combo port on the back Step 3: Post-Installation Follow steps #4 from guide above Note: Need to copy patched Haswell Kernel from Installer to HDD/SSD M6800.zip

Erm... you did open the TrackPad PrefPane and enable "Tap to Click", right? Because that's not enabled by default ...