Hackintosh-OptiPlex-7080-MT

Opencore Bootloader 0.7.6. Tested on Monterey 12.1

Introdution

You will have to generate a new SMIBIOS before login to your iCloud account.

Hardware Specs

• Desktop Computer: Dell OptiPlex 7080 Tower
• CPU: Intel® Core™ i7-10700
• iGPU: Intel® UHD Graphics 630
• GPU: ASRock AMD Radeon RX 6600 XT Challenger ITX 8GB
• RAM: 64GB DDR4 2933 Daul Channel
• HDD: WD Blue SN550 NVMe SSD 1T
• LAN: Intel X540-T2 / Intel I219LM11
• Wi-Fi & Bluetooth: BCM94360NG

Working

• CPU Turbo Boost & SpeedStep
• Radeon™ RX 6600 XT & iGPU acceleration
• Internal Speaker / Front panel headphone out / Back panel lineout
• USB Ports (rear USB 2.0 ports disabled due to macOS ports limit)
• 10G LAN & Wireless Network
• Sleep & Wakeup
• Airdrop / Airplay / Handoff

Not working

• Sidecar (needs T2 chip)
• DRM Content in Safari (needs T2 chip)

UEFI Settings

• System Configuration → Serial Port: Disabled
• System Configuration → SATA Operation: AHCI
• Video → Multi Display: Enable Multi-Display
• Video → Primary Display: Auto
• Security → PTT Security: uncheck
• Secure Boot → Secure Boot Enable: uncheck
• Intel® Software Guard Extensions™ → Intel® SGX™ Enable: uncheck
• Virtualization Support → VT for Direct I/O: uncheck

Modify DVMT & CFG_lock settings

• BIOS/UEFI editor ru.efi
• Disable CFG lock: set 003E to 0x00 under CPUSetup
• 64M Pre-Allocated DVMT: set 00F5 to 0x02 under SASetup

USB Mapping

USB ports map: 

• HS09 and HS10 disabled due to the MacOS USB ports limit.
• Check Dortania\’s guide for more infos on USB mapping.

ACPI tweaks

• Create general SSDTs using SSDTTime
• Add SSDT-Shutdown.aml to fix shutdown no longer needed
• Add SSDT-GPRW.aml to improve sleep / wake
• Add SSDT-HPET.aml to fix IRQ conflicts

X540-T2 eeprom modification

Flashing eeprom could brick the NIC card, do it at your own risk.

• Original Guide
• For my X540-T2 cards, the commands look like this:

sudo ethtool -E  magic 0x15288086 offset 0x48e value 0x0a
sudo ethtool -E  magic 0x15288086 offset 0x48f value 0x00
sudo ethtool -E  magic 0x15288086 offset 0x48e value 0x0a
sudo ethtool -E  magic 0x15288086 offset 0x48f value 0x00