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Dell Precision M4800 - all hardware


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Dell Precision M4800 Mobile Workstation


The specs:

  • BIOS A16 (needs HDD set to AHCI mode)
  • Intel QM87 Express chipset
  • Intel i7-4800MQ 2.69GHz quad-core Haswell-MB CPU
  • integrated Intel HD4600 GPU (PCI ven id 0x8086, dev id 0x0416)
  • discrete nVidia Quadro K1100M GPU (PCI ven id 0x10de, dev id 0x0ff6)15,6†1920x1080 WideScreen LCD
  • 16GB DDR3L-1600 RAM
  • Intel i217-LM Gigabit Ethernet (PCI ven id 0x8086, dev id 0x153a)
  • Realtek ALC292 High Def audio (PCI ven id 0x8086, dev id 0x8c20)
  • Dell Wireless 1550 BCM94352 abgn/ac + Bluetooth 4.0 (PCI ven id 0x14e4, dev id 0x43b1)
  • Sonix Technology integrated HD webcam (USB internal, PCI ven id 0x0c45, dev id 0x649d)
  • 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 3.0 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 "Switchable Graphics"



Full QE/CI with Nvidia Quadro K1100M

Wireless + Bluetooth 4.0

HDMI Video/ DP Video with Audio

Internal Speaker/Headphone/Mic

USB 3.0/USB 2.0/eSata Ports

SD Card Reader



Not Working:


Brightness level if Switchable Graphic is Disabled


SmartCard Reader


there are needed files for Precision M4800:

- config.plist for Clover

- patched ACPI DSDT.aml, CPU-secific SSDT.aml for CPU power management

- kexts for Clover (10.10, 10.11)

- kexts to S/L/E (AppleHDA is vanilla without any patches, version 272.51.3 from OSX 10.11.2)


Update No. 1:

OSX can boot with booth options: Enabled or Disabled Switchable Graphic

BIOS: load default configuration, SATA set to AHCI.

- Switchable graphic Disabled - internal display brightness is at highest level and can not be changed with any keys (need resolve this problem), nVidia Quadro K1100M full GPU performance + HDMI, DP output

- Switchable graphic Enabled - internal display with changeable brightness level (Fn+Up/Down key)but with poor GPU performance. Integrated Intel HD4600 GPU with no HDMI or DP output.

M4800 v.2.zip

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problems may be with this:
1: my SSDT.aml is for CPU i7-4800mq, yours is i7-4810mq I think, so try it without this file
2: to work my wifi Dell Wireless 1550 I must insert device and vendor ID to Info.Plist here: /System/Library/Extensions/IO80211Family.kext/Contents/PlugIns/AirPortBrcm4360.kext/Contents
and handOff+5GHz support with this wireless_bcm9435-110-v4.0c.command
3: your display, it is LCD TN, or IPS?


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Hmm, I'll need to test this config on my M6800 and see if it's the same behavior. Do you have to plug in power adapter when waking up the system?

I get a black or blank screen if it's not plugin in prior to waking it up.



Try ACPIPoller.kext with Rehabman's LIDP patch, see if sleep with LID works.

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