MSI H55M-E21 Intel VGA Driver 15.16.6.2025 for

CPU
- Supports Intel i3 / i5 / i7 based processors in LGA1156 package.

Chipset
- Intel H55 Chipset
- Supports QPI up to 6.4GT/s
- Hi-Speed USB (USB2.0) controller, 480Mb/sec.
- 6 SATAII ports with transfer rate up to 3Gb/s.
- PCI Master v2.3, I/O APIC.
- ACPI 2.0 compliant.

Main Memory
- Supports two unbuffered DIMM of 1.5 Volt DDR3 1066/1333/1600* (OC) DRAM, 8GB Max
- Supports 1Gb/ 2Gb/ 4Gb DRAM size
- Supports Dual channel mode

Slots
- 1 PCI Express gen2 x16 slot
- 2 PCI Express gen2 x1 slots
- 1 PCI slots, support 3.3V/ 5V PCI bus Interface

On-Board SATA
- SATAII controller integrated in Intel H55 chipset
- Up to 3Gb/s transfer speed.
- Supports six SATAII ports by H55

Audio
- Chipset integrated by Realtek ALC887
- Flexible 8-channel audio with jack sensing
- Compliant with Azalia 1.0 Spec
- Meet Microsoft Vista Premium spec

LAN
- Supports one PCI Express LAN 10/100 Fast Ethernet by Realtek 8105E.

Internal I/O Connectors
- ATX 24-Pin power connector
- 4-pin ATX 12V power connector 
- CPU x 1 / System x 2 FAN connectors
- Front panel audio connector
- Front panel connector
- 1 x chasis intrusion connector
- 3 x USB 2.0 connectors
- 6 x Serial ATAII connectors
- 1 x Clear CMOS jumper
- 1 x SPDIF-out connector
- 1 x TPM module connector
- 1 x Serial port connector
- 1 x Parallel port connector
MSI Reminds You...
- The floppy disk cable will be optional.

Back Panel I/O Ports
- 1 x PS/2 Mouse
- 1 x PS/2 Keyboard
- 1 x HDMI port
- 4 x USB 2.0 ports
- 1 x Graphic Card port 
- 1 x DVI port
- 1 x RJ45 LAN Jack
- 1 x 3 in 1 audio jack
MSI Reminds You...
- HDMI, VGA & DVI-D ports can only work with CPUs with GPUs core inside.

BIOS
- The mainboard BIOS provides \"Plug & Play\" BIOS which detects the peripheral devices and expansion cards of the board automatically.
- The mainboard provides a Desktop Management Interface(DMI) function which records your mainboard specifications.

Dimension
- 24.5cm(L) x 21.0cm(W) M-ATX Form Factor 



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Try to set a system restore point before installing a device driver. This will help if you installed a wrong driver. Problems can arise when your hardware device is too old or not supported any longer.