The Acer IPIMB-AR (Rev 1.02a) is a Micro-ATX motherboard commonly found in pre-built systems like the Acer Predator G3620, Aspire M3985, and Gateway DX4870. While a dedicated standalone manual is not publicly available from Acer, its technical specifications and layout are well-documented through service guides for these specific desktop models. Performance and Core Specs
Socket: LGA 1155, supporting 2nd (Sandy Bridge) and 3rd Gen (Ivy Bridge) Intel Core i3/i5/i7 processors.
Chipset: Intel B75 Express, which provides native support for USB 3.0 and SATA III.
Memory: 4 DIMM slots supporting up to 16GB of DDR3 1333/1600 MHz non-ECC unbuffered memory.
Expansion: Includes 1x PCIe 3.0 x16 slot (when using Ivy Bridge CPUs) and 3x PCIe 2.0 x1 slots. Connectivity and Storage
Storage: 2x SATA III (6Gb/s) and 4x SATA II (3Gb/s) ports, totaling 6 internal connectors.
Rear I/O: Features HDMI and VGA for integrated graphics, 2x USB 3.0, 4x USB 2.0, and standard Realtek HD Audio jacks.
Networking: Integrated Intel Gigabit Ethernet (10/100/1000 Mb/s). User Experience and Challenges Download Acer Support Drivers and Manuals
The Acer IPIMB-AR (also known as the Rev 1.02a) is a specialized Micro-ATX motherboard frequently found in Acer Aspire and Gateway desktop systems, such as the Acer Aspire AM3985 or AT3985 series. Because this is an Original Equipment Manufacturer (OEM) board produced by Pegatron, a standalone retail manual can be difficult to find.
This guide serves as a comprehensive technical reference for the Acer IPIMB-AR Rev 1.02a, covering its specifications, layout, and pin configurations to help you with upgrades or repairs. 🛠️ Technical Specifications
Understanding the hardware limits of this board is essential before purchasing upgrade components. Chipset: Intel B75 Express.
Socket: LGA 1155 (Supports Sandy Bridge and Ivy Bridge CPUs).
Memory: 4 x DDR3 DIMM slots (Dual Channel, up to 32GB total, 1333/1600 MHz). Form Factor: Micro-ATX (approx. 24.4 cm x 24.4 cm). Expansion Slots: 1 x PCI Express x16 (Blue). 3 x PCI Express x1. 1 x Mini PCI Express (often used for Wi-Fi cards). Storage: 1 x SATA III (6.0 Gb/s) — usually the black or red port. 5 x SATA II (3.0 Gb/s). 🔌 Front Panel Header Pinout
The most common reason users search for this manual is to connect the power button, reset switch, and LEDs when moving the board to a new case. The front panel header (usually labeled F_PANEL) is typically color-coded but follows this standard layout: Pin Number Assignment Pins 1-3 Hard Drive Activity LED Pins 2-4 Pins 5-7 Reset Switch Pins 6-8 Power Button Pin 9 Reserved (Leave empty) ⚡ Power and Cooling Connections
To ensure system stability, verify these connections are seated firmly: Main Power: 24-pin ATX Power Connector.
CPU Power: 4-pin 12V Connector (Located near the CPU socket). CPU Fan: 4-pin PWM header (Labeled CPU_FAN). System Fan: 3-pin or 4-pin header (Labeled SYS_FAN). 🖥️ Rear I/O Ports Acer Ipimb-ar Rev 1.02a Manual
The Rev 1.02a provides a standard array of ports for peripheral connectivity: 2 x USB 3.0 ports (Blue). 4 x USB 2.0 ports (Black). 1 x HDMI port. 1 x VGA (D-Sub) port. 1 x RJ-45 Ethernet port (Gigabit). 3 x Audio Jacks (Line-in, Line-out, Mic-in). ⚠️ Important Installation Notes
BIOS Limitations: As an OEM board, the BIOS is often "locked." It may not support high-end overclocking or specific high-performance RAM profiles (XMP).
UEFI vs Legacy: This board generally supports UEFI, which is necessary for booting from drives larger than 2TB and running Windows 11 (though the CPU might not be officially supported by Microsoft).
Clear CMOS: If the system fails to boot after a hardware change, locate the CLR_CMOS jumper. Move the jumper from pins 1-2 to 2-3 for 10 seconds, then return it to the original position to reset the BIOS settings.
This is where most DIY builders get stuck. Acer, unlike standard motherboards that use a standard 2-row header block, often utilizes a specific layout. On the IPIMB-AR Rev 1.02A, the Front Panel Header is usually located on the bottom right edge.
If you are trying to power this board on without the original Acer case button, you need to short the "Power Switch" pins.
Standard Pinout (Use with Caution):
(Note: Pinout arrangements can vary slightly between PCB revisions. Always look for the small "+" and "-" markings silk-screened on the board near the header. If the board does not boot, check the 5V Standby LED on the board to ensure the PSU is supplying power.)
The manual specifies Jumper JMP1 for CMOS reset:
| Jumper Position | Mode | |----------------|------| | Pins 1-2 (default) | Normal operation | | Pins 2-3 | Clear CMOS / Reset BIOS |
Procedure for Rev 1.02a:
Note: Some Rev 1.02a boards lack a physical jumper and use a "CLR_CMOS" solder pad – short the two pads with a screwdriver tip for 5 seconds.
The Acer IPIMB-AR (Rev 1.02a) is a proprietary motherboard most commonly found in pre-built Acer desktops such as the Aspire M3970, AM3970, and some Predator gaming towers from the early 2010s (LGA1155 socket for Intel 2nd and 3rd gen Core processors). This review evaluates the official product manual provided by Acer for this specific revision.
| You need | Look for | |----------|-----------| | Motherboard layout, connectors, jumper settings | Aspire M3400 Service Guide | | RAM upgrades, hard drive, ports, BIOS navigation | Aspire M3400 User Manual | | Drivers, BIOS, chipset drivers | Acer support for Aspire M3400 / AM3470 |
Official service manuals for the Acer IPIMB-AR (Rev 1.02a) are not publicly available from Acer, as they were primarily manufactured for pre-built systems like the Gateway DX4870 The Acer IPIMB-AR (Rev 1
. However, the core specifications and layout details for this Micro-ATX motherboard are well-documented. Core Specifications Form Factor : Micro-ATX. : Intel B75 Express. CPU Socket
: LGA 1155 (Supports Intel Core i7/i5/i3 Sandy Bridge and Ivy Bridge processors up to 95W). : 4 x 240-pin DDR3 DIMM slots; supports up to of DDR3 1333 MHz non-ECC, unbuffered memory. Expansion Slots
1 x PCI Express x16 (3.0 with Ivy Bridge CPUs; 2.0 with Sandy Bridge). 3 x PCI Express x1 (2.0). : 2 x SATA III (6Gb/s) and 4 x SATA II (3Gb/s) ports. The Retro Web Internal Headers & Connectors
If you are moving this board to a new case, use these connector locations: : 24-pin ATX and 4-pin 12V ATX power connectors. : 1 x 4-pin CPU Fan and 1 x 3-pin System/Rear Fan. Front Panel
: Dedicated headers for Front Audio, USB 2.0, and the Front Panel (Power/Reset/LEDs). Maintenance : 1 x Clear CMOS jumper and a 3V battery socket. Rear I/O Ports : 1 x HDMI, 1 x VGA. : 2 x USB 3.0 ports, 4 x USB 2.0 ports. Networking : 1 x RJ45 Gigabit Ethernet port (Intel). : 3 x Audio I/O jacks (Realtek High Definition). : 2 x PS/2 ports (for keyboard and mouse). The Retro Web
For official drivers or potential BIOS updates, you can try entering your SNID on the Acer Support Download Page
. Detailed technical specifications are also available in documentation mirrors on sites like The Retro Web for your power and LED cables? Manual for Acer ipimb - ar? - Tom's Hardware Forum
Comprehensive Guide to the Acer IPIMB-AR Rev 1.02a Motherboard Acer IPIMB-AR Rev 1.02a
is a Micro-ATX motherboard commonly found in pre-built desktop systems like the Acer Predator G3620
, Gateway DX4870, and Acer Aspire M3985. Based on the Intel B75 Express chipset, this board is a reliable "workhorse" for Sandy Bridge and Ivy Bridge setups, though it can be picky about modern GPU upgrades.
Since official manuals can be hard to track down, this post serves as a consolidated technical reference for specs, pinouts, and support. Core Specifications Intel B75 Express.
LGA 1155 (Supports Intel 2nd and 3rd Gen processors up to 95W). 4x 240-pin DDR3 DIMM slots. Max Capacity: 16GB (some sources suggest 32GB). Supports Dual Channel DDR3 1333/1600 MHz. Expansion: 1x PCIe 3.0 x16 (requires Ivy Bridge CPU for 3.0 speeds). 3x PCIe 2.0 x1. 2x SATA III (6Gb/s). 4x SATA II (3Gb/s). Form Factor: Micro-ATX. Front Panel Header Pinout
The Acer IPIMB-AR Rev 1.02a Go to product viewer dialog for this item.
is an OEM motherboard primarily found in pre-built systems like the Acer Predator G3620 , Gateway DX4870 Go to product viewer dialog for this item. , and Acer Aspire M3985
. Since official service manuals are often not publicly released for these boards, finding documentation can be tricky. Pin 1 & 3: Hard Drive LED (+
Below is a comprehensive guide based on technical specifications and community findings to help you with your setup or upgrade. Core Specifications Overview Chipset: Intel B75 Express.
Socket: LGA 1155 (Supports Intel 2nd Gen "Sandy Bridge" and 3rd Gen "Ivy Bridge" CPUs). Form Factor: Micro-ATX (roughly 24.4cm x 24.4cm).
Memory: 4x DDR3 DIMM slots supporting up to 16GB (Dual Channel, non-ECC, unbuffered, typically 1333/1600 MHz). CPU Compatibility List
The board officially supports processors up to 95W TDP. Notable compatible CPUs include: Core i7: 3770(K), 2700, 2600(K). Core i5: 3570(K), 3450, 3330, 2500, 2400, 2300. Core i3: 3240, 3225, 3220. Pentium/Celeron: Most Ivy Bridge and Sandy Bridge variants. Storage & Expansion
PCIe Slots: 1x PCIe 3.0 x16 (full-speed for GPUs) and 3x PCIe 2.0 x1 slots. SATA Ports: 2x SATA III (6Gb/s) – Best for your primary SSD.
4x SATA II (3Gb/s) – Good for secondary HDDs or optical drives. Front Panel Connector Diagram (F_PANEL)
Identifying the front panel pins is often the hardest part of an OEM board swap. While specific pinouts can vary, this board typically follows a standard 9-pin layout: Top Row: [HDD LED +/-] [Power Switch] [Empty] Bottom Row: [Power LED +/-] [Reset Switch] [No Pin]
Tip: Polarity (Positive/Negative) matters for the LEDs, but the Power and Reset buttons will work regardless of orientation. Rear I/O Connectivity USB: 2x USB 3.0 (Blue) and 4x USB 2.0.
Video: 1x VGA and 1x HDMI (requires a CPU with integrated graphics). Networking: 1x RJ45 Gigabit Ethernet port. Audio: 3-jack Realtek High Definition Audio. Legacy: PS/2 ports for mouse (green) and keyboard (purple).
Are you planning to upgrade the CPU or transplant this motherboard into a new case? Knowing your goal can help me provide specific advice on BIOS compatibility or power supply requirements.
Title: The Ghost in the Machine: A Comprehensive Look at the Acer IPIMB-AR Rev 1.02A Motherboard
In the world of PC building and repair, few things are as frustrating as proprietary hardware. You find a great deal on a motherboard, pull it out of a sleek pre-built PC, and realize the documentation is nonexistent.
Such is the case with the Acer IPIMB-AR Rev 1.02A. Often found housing the silicon brains of Acer Aspire desktops (specifically models like the Aspire X3900 and X3900G) and Veriton business towers, this board is a capable LGA 1156 platform that has baffled many upgraders.
This article serves as a practical manual and guide for the IPIMB-AR, deciphering its layout, specs, and the critical pinouts you need to know to keep it running.
