M72z

Audio

 * Integrated Audio
 * 24-bit DAC and 20-bit ADC
 * High Definition Stereo Supported
 * 2 channels of DAC support 16/20/24-bit PCM format
 * 2 stereo ADC support 16/20bit PCM format

Chipset

 * Intel H61

Memory

 * PC3-12800 2GB, 4GB memory supported
 * Two 240pin SoDIMM DDR3 slots
 * Supported 2GB, 4GB, 8GB

Processor

 * Intel® Core i7 Ivy Bridge 3770S
 * Intel® Core i5 Ivy Bridge 3570S
 * Intel® Core i5 Ivy Bridge 3550S
 * Intel® Core i5 Ivy Bridge 3470T
 * Intel® Core i5 Ivy Bridge 3470S
 * Intel® Core i3 Ivy Bridge 3220
 * Intel® Core i3 Ivy Bridge 3240
 * Intel® Pentium Sandy Bridge G620
 * Intel® Pentium Sandy Bridge G630
 * Intel® Pentium Sandy Bridge G840
 * Intel® Pentium Sandy Bridge G850
 * Intel® Pentium Sandy Bridge G860
 * Intel® Celeron® Sandy Bridge G440
 * Intel® Celeron® Sandy Bridge G530
 * Intel® Celeron® Sandy Bridge G540
 * Intel® Celeron® Sandy Bridge G460

Standard I/O Ports

 * 6 High Speed USB 2.0
 * 1 Cardreader
 * 1 Microphone
 * 1 Headphone
 * 1 COM connecter
 * 1 DP out
 * 1 RJ45 connecter

Ethernet

 * Realtek RTL8111E-VB
 * Data Rates Supported - 10 Mbps, 100 Mbps, 1000 Mbps
 * Intergrated memory
 * IEEE standards compliance

Wireless LAN - optional

 * Intel Centrino® Advanced-N 6205
 * Intel Centrino® Wireless-N 2230

Bays

 * Single Slot SD Media Card Reader

Power Supply

 * 150W 85 plus Auto-sensing
 * 100-127V, 200-240V

Power Management

 * Advanced Configuration and Power Interface (ACPI) support
 * Power supply meets the following requirements:
 * Energy Star 4.0 Complaint Power Supply
 * Energy Star 5.0 Complaint Power Supply
 * Eup

Security

 * Trust Platform Moduel
 * USB Individual disable or enable
 * Cover intrusion switch
 * Computrace Support
 * Kensington Slot (in rear for optional cable)

Operating Systems

 * Microsoft Windows 7 Professional 64bit/32bit (include SP1)
 * Microsoft Windows 7 Home Premium 64bit/32bit (include SP1)
 * Microsoft Windows 7 Home Basic 64bit/32bit (china only) (include SP1)
 * DOS(China only), Linux – Redhat, Novel SUSE and Ubuntu Linux, Certified
 * Windows XP /Vista (Driver Support)

Hard drive features

 * 160GB 7200RPM Serial ATA
 * 160GB Solid-State Drive
 * Maximum volume for single HDD - 1TB
 * Single HDD support only
 * ODD Suport only with Single HDD

Optical Drive

 * DVD Recorderable
 * Writes - 8x DVD+/-R, 6x DVD+/-RW, 5x DVD-RAM, 24x CD-R, 16x CD-RW
 * Reads - 8x DVD-ROM / 24x CD-ROM

Integrated Graphic Adapter

 * Intel Graphics Media Accelerator HD
 * Analog Display, Digital Display Interface
 * Dual Monitor Support
 * Maximum Color Depth - 32 bit
 * Video Resolution (max)
 * Panel: 1600x900 with 3bpp at 60Hz
 * DP: 2560x1600 at 60Hz
 * HDMI, DVI: 1920x1200 at 60Hz

Webcam - optional

 * USB 2.0 video class 1.1 compatible
 * Color space for AP - YUY2, MJEG
 * Digital Microphone Sensitivity -30 ~ -22 dBFs
 * Video Resolution (max)
 * HD 1080p: 1920x1080
 * UXGA: 1600x1200
 * SXGA: 1280x1024
 * HD 720p: 1280x720
 * VGA: 640x480
 * CIF: 352x288
 * QVGA: 320x240
 * QCIF: 176x144

Source
https://support.lenovo.com/us/en/solutions/pd024903