Key facts
- Brand
- ASRock
- Model
- 990FX Extreme4
- Category
- Other Computer Accessories
- Industry
- Computers
- Documents
- 3
- Languages
- EN
- Last added
- 2026-09-30
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ASRock 990FX Extreme4 Motherboard User Manual
This manual covers everything needed to install, configure, and operate the ASRock 990FX Extreme4 ATX motherboard. It includes a step‑by‑step hardware installation guide, BIOS setup instructions, driver installation procedures, and troubleshooting tips.
Key features include support for AMD AM3+ and AM3 CPUs (up to 8 cores and 140 W), four DDR3 DIMM slots for up to 32 GB of memory, three PCI Express 2.0 x16 slots, eight SATA 3 Gb/s connectors, USB 3.0 and USB 2.0 ports, a Gigabit LAN controller, and Realtek 7.1‑channel audio.
ASRock 990FX Extreme4 specifications
| Form Factor | ATX (12.0‑in x 9.6‑in) |
|---|---|
| CPU Socket | Socket AM3+ (also AM3) |
| Maximum Memory Capacity | 32 GB |
| USB 3.0 Ports | 2 |
| SATA3 Connectors | 8 (6 AMD + 2 Marvell) |
| LAN Controller | Broadcom BCM57781 Gigabit Ethernet |
All ASRock 990FX Extreme4 documents by type
Day-to-day operation, settings and troubleshooting. Start here if the product is already set up.
Mounting, wiring and first power-up. Read it before the hardware goes in.
Questions answered in these manuals
How many USB 3.0 ports does the motherboard have?
It provides two Ready‑to‑Use USB 3.0 ports.
What CPU socket is supported by the motherboard?
The board supports Socket AM3+ (and AM3) processors.
Which Windows operating systems are supported for installation?
The motherboard supports Windows Vista 64‑bit (with SP1 or later) and Windows 7 64‑bit.
How do I enable AHCI mode in the BIOS?
Press <F2> or <Delete> at POST, go to Advanced > Storage Configuration > SATA Mode, and set it to AHCI.
Which Windows operating systems are supported?
The motherboard supports Windows 7/7 64‑bit, Vista/ Vista 64‑bit, XP and XP 64‑bit.
How many SATA3 ports does the board provide?
It provides eight SATA3 6.0 Gb/s connectors.