Intel Desktop Board 21 B6 E1 E2 Manual -

The marking "21 B6 E1 E2" (often preceded by a slash as /21-B6-E1-E2

Because markings like "21 B6 E1 E2" are not model numbers, you must locate the true board identifier to find the correct manual. 1. Check the Physical Board Look directly at the motherboard for a small barcode label. Intel Desktop Board 21 B6 E1 E2 Manual

Processor Support: Intel Core i7, i5, and i3 2nd and 3rd Generation processors. The marking "21 B6 E1 E2" (often preceded

If you can provide any other numbers visible on the board (near the center or edges), I can help pinpoint the exact manual. Processor Socket: LGA775 (Supports Intel Core 2 Quad,

1. Motherboard Layout (Visual Reference)

• Processor Socket: LGA775 (Supports Intel Core 2 Quad, Core 2 Duo, Pentium D, Celeron D).
• Memory Slots: 2 or 4 DIMM slots. Check your revision: "E1/E2" might indicate voltage support. Older = DDR2 (1.8V). Newer = DDR3 (1.5V). Do not mix voltages.
• Expansion Slots: 1 x PCI Express x16 (for graphics), 1 x PCIe x1, 2 x PCI.
• Rear I/O: PS/2 mouse/keyboard, 4x USB 2.0, LAN, VGA (on G31/G33), audio jacks.

Key Features from the Manual

| Feature | Description | |---------|-------------| | Processor socket | LGA775 | | Chipset | Intel 945G / 915G (likely) | | Memory | DDR2 DIMMs, up to 4 GB, dual‑channel | | Graphics | Integrated Intel GMA 950 (or 900) | | Expansion slots | 1×PCIe x16, 1×PCIe x1, 2×PCI | | Storage | 4×SATA 3 Gb/s, 1×PATA | | Audio | Realtek ALC662 / 6‑channel | | LAN | 10/100 or Gigabit (Realtek/Intel) | | Rear I/O | VGA, USB 2.0 (4–6 ports), PS/2, LAN, audio jacks |