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Lenovo ThinkCentre M900

79 
Refurbished Lenovo ThinkCentre M900 is a business-class desktop computer that uses 6th generation Intel Core processors and supports up to 64 GB of DDR4 memory depending on the form factor. The device has been technically inspected and comes with a 1...
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Estimated delivery: 09.07.2026 - 13.07.2026
12-months warranty: All our devices come with a 12-month warranty for your peace of mind.
14-day return policy: If the product does not match its description, we will gladly accept a return.
This product is sold under the VAT margin scheme (KMS § 41)

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79 
Description
Specification

Refurbished Lenovo ThinkCentre M900

The Lenovo ThinkCentre M900 is a business-class desktop computer available in Tiny, SFF, and Tower form factors. It is based on the Intel Q170 platform and supports 6th generation Intel Core processors.

  • Form factor: Tiny / SFF / Tower
  • Processor platform: 6th generation Intel Core
  • Connectivity: Gigabit Ethernet, USB 3.0, USB 2.0
  • Video outputs: DisplayPort and VGA

The ThinkCentre M900 is well suited for everyday office work, document management, and multi-monitor use. Selected models also support enterprise management and security features, including TPM and Intel vPro.

Included: Lenovo ThinkCentre M900. Charger not included. A compatible charger is available as an optional accessory.

General

Manufacturer Lenovo
Model ThinkCentre M900
Product series ThinkCentre M-series
Device type Desktop PC
Form factor Tiny / SFF / Tower
Platform Intel vPro business-class platform
Intended use Office and business use
Generation ThinkCentre M900 series

Processor

Processor platform 6th generation Intel Core
Processor socket LGA1151
Chipset Intel Q170
Supported processors Intel Core i3 / i5 / i7, Intel Pentium
Maximum processor class Intel Core i7-6700
Number of cores up to 4
Number of threads up to 8
Maximum clock speed up to 4.0 GHz

Memory

Memory type DDR4 SDRAM
Memory speed 2133 MHz
Number of memory slots 2 (Tiny), 4 (SFF/Tower)
Memory channels Dual-channel
Maximum memory 32 GB (Tiny), up to 64 GB (SFF/Tower)
ECC support No
Memory module form factor SO-DIMM (Tiny), DIMM (SFF/Tower)
Supported configurations 4 GB / 8 GB / 16 GB / 32 GB / 64 GB depending on model

Storage

Storage device type HDD / SSD
2.5" drive support Yes
3.5" drive support Yes (SFF/Tower)
M.2 support Yes, on selected configurations
SATA interface SATA III 6 Gb/s
Supported HDD capacities up to 2 TB
Supported SSD capacities 128 GB / 180 GB / 192 GB / 256 GB / 512 GB depending on configuration
Optical drive support DVD-ROM / DVD±RW optional (SFF/Tower)

Graphics

Integrated graphics Intel HD Graphics 510 / 530 depending on processor
Discrete graphics support Yes, on selected SFF and Tower models
Graphics outputs DisplayPort, VGA, optionally HDMI or additional ports
Multi-monitor support Yes
Maximum number of monitors up to 3 depending on configuration
Hardware video acceleration Yes
DirectX support DirectX 12
OpenGL support OpenGL 4.x

Motherboard and expandability

Chipset Intel Q170 Express
PCIe slots Available on SFF/Tower models
M.2 slot On selected models
Internal SATA slots Yes
TPM TPM 1.2 / 2.0 depending on configuration
Serial port Optional
Parallel port Optional via adapter or configuration
Chassis intrusion sensor Optional

Connectivity

Ethernet Gigabit Ethernet 10/100/1000
LAN controller Intel Ethernet controller
Wi-Fi 802.11ac optional
Bluetooth Bluetooth 4.0 / 4.1 optional
USB 3.0 Yes
USB 2.0 Yes
DisplayPort Yes
VGA Yes

Front panel ports

USB 3.0 ports 2
Microphone input 1
Headphone output 1
Always On USB charging On selected configurations
Power button Yes
HDD activity indicator Yes

Rear panel ports

USB 3.0 ports 4
USB 2.0 ports 2
DisplayPort 2
VGA 1
RJ-45 1
Audio output 1
Serial port Optional
PS/2 Optional depending on form factor

Audio

Audio chip Integrated HD Audio
Audio channels High-definition stereo audio
Internal speaker Yes
Microphone support Yes
Headphone support Yes
Combined audio solution 3.5 mm audio connections depending on model

Security

TPM security module Yes
Kensington lock slot Yes
Chassis padlock support Yes
BIOS password Yes
Hard drive password Yes
Intel vPro support On selected processors
Intel AMT On selected configurations
Secure Erase support Yes

Power

Power supply type Internal / external adapter depending on form factor
Power supply wattage 65 W (Tiny), 180 W or 210 W (SFF), up to 250 W (Tower)
Input voltage 100–240 V AC
Input frequency 50/60 Hz
Energy efficiency 80 PLUS depending on configuration
Power management ACPI, Wake on LAN, automatic power-on
Power cord type Removable
PFC Active PFC

Cooling and noise level

Cooling system Active air cooling
Processor cooler Fan with heatsink
Chassis fans Depending on form factor
Airflow design Front-to-back
Dust protection Standard internal construction
Temperature monitoring Yes, via system sensors

Operating system

Preinstalled operating system Windows 7 Professional / Windows 10 Pro depending on configuration
64-bit support Yes
Linux support Yes
Recovery options Recovery partition or recovery media depending on model
UEFI Yes
Legacy BIOS support Yes

Management and enterprise features

Remote management Intel AMT on selected models
PXE boot Yes
Wake on LAN Yes
DASH support No
Remote BIOS update Yes
Asset management Yes, via enterprise management tools
Hardware diagnostics Yes
Disk image deployment Yes

Case and build

Case material Metal and plastic
Color Black
Tool-less access On selected SFF/Tower models
Mounting options On desk, behind monitor, VESA mount on selected Tiny models
Vertical operating position Yes, on selected models
Serviceability Component replacement and expansion with simplified construction

Dimensions and weight

Dimensions (Tiny) ca 179 x 182.9 x 34.5 mm
Weight (Tiny) ca 1.3 kg
Dimensions (SFF) ca 338 x 357 x 88 mm
Weight (SFF) ca 6.0 kg
Dimensions (Tower) ca 170 x 413 x 376 mm
Weight (Tower) ca 9.4 kg

Environmental conditions

Operating temperature 10 °C to 35 °C
Storage temperature -40 °C to 60 °C
Operating humidity 20% to 80% relative humidity
Storage humidity 10% to 90% relative humidity
Maximum operating altitude up to 3048 m
Maximum storage altitude up to 10668 m

Certifications and standards

Energy Star Yes
EPEAT Yes
RoHS Yes
ErP Lot 3 Yes
GREENGUARD On selected configurations
UL Yes
CE Yes
FCC Yes

Included in the box

Desktop PC Yes
Power cable or adapter Yes
Keyboard Optional or included depending on market
Mouse Optional or included depending on market
Documentation Yes
Vertical stand Optional depending on form factor
Refurbished

Related desktop computers

All our refurbished desktop computers have undergone a thorough inspection. Order today and receive your item within 1–3 days! All purchases come with a 14-day return policy and a 12-month warranty.

Frequently asked questions

Are Technocircle devices new or used?

Technocircle sells tested pre-owned electronic devices. Our selection includes smartphones, tablets, laptops, smartwatches and other devices that are ready for their next user.

The devices are not new. Each product page shows the device’s cosmetic condition, technical specifications and other important product information.

Before a device is listed for sale, its technical functionality is checked. Only devices that are ready to use and meet our sales standards are offered for sale.

What condition are the devices and batteries in?

The cosmetic condition of each device is shown on the product page as a condition grade. The condition grade describes only the visual condition of the device, such as possible signs of use, scratches or wear. Technical functionality and battery condition are checked separately.

  • A+ – Excellent cosmetic condition. The device looks like new. Only very small micro-marks may be present, which are generally not visible from arm’s length during normal use.
  • A – Very good cosmetic condition. The device may have light signs of use or micro-scratches that are generally not visible during normal use.
  • B – Good cosmetic condition. The device may have some visible signs of use, scratches or minor wear when viewed from arm’s length during normal use. A good choice for customers looking for a strong balance between price and condition.
  • C+ – More visible signs of use. The body or back cover may have deeper scratches, dents or wear marks. The device is technically tested and fully functional.

The screens of all devices listed for sale are checked, intact and suitable for normal use. The screen has no cracks or damage that would prevent normal use. Depending on the condition grade, the screen may have micro-marks or scratches, but no scratch or sign of use may interfere with normal use of the device.

Signs of use are cosmetic and do not affect normal use of the device. The exact appearance may vary slightly between devices within the same condition grade.

The battery capacity of smartphones and tablets is at least 80%. If a battery does not meet our sales standard, the device is not sold in that condition or the battery is replaced before sale.

For laptops, battery condition information is shown separately on the product page.

Because the battery is a consumable component in a used device, actual battery life depends on the device model, age, usage habits and settings.

Does the device come with a charging cable or charger?

The included charging accessories depend on the device type. Below you can see what is included with each type of device.

Smartphones: the device always comes with a compatible charging cable and a SIM eject tool. A wall adapter is not included.

Tablets: the device always comes with a compatible charging cable. If the tablet supports LTE, a SIM eject tool is also included. A wall adapter is not included.

Laptops: laptops are sold without a charger. The laptop price does not include a charger, and a charger must be purchased separately if needed. You can view laptop chargers here.

Smartwatches: the device always comes with a compatible charging cable. A wall adapter is not included.

Do the devices come with a warranty?

Yes. All devices purchased from Technocircle come with a 12-month sales warranty.

The warranty covers technical faults and functional defects that are not caused by customer actions, incorrect use, drops, liquid damage, normal wear and tear or other exclusions listed in the warranty terms.

The battery is a consumable component in a used device and is covered by a separate 3-month sales warranty.

In the event of a warranty case, we will inspect the device and, where justified, repair it, replace it with an equivalent device or find another solution in accordance with the warranty terms.

More detailed information is available in our warranty terms.

Can I return the device?

Yes. When purchasing from our online store, you have the right to return the device within 14 days if it does not suit you.

The returned device must be in the same condition as when received, and all accessories included with the device must also be returned, such as the charging cable, SIM eject tool or any other included accessory.

Before returning the device, please remove all personal data, user accounts, passwords, SIM cards, memory cards and activation locks where possible.

To start a return, please follow the instructions on our returns page. More detailed terms are also available in our Refund and Returns Policy.

How quickly is the order shipped and delivered?

Orders are usually shipped on business days within 24 hours after payment has been received and the order has been confirmed.

For same-day dispatch, orders are locked on business days at 12:00. If the order is placed after 12:00, it will usually move to the next business day’s dispatch.

The warehouse does not operate on weekends or public holidays, so orders placed during these days will move to dispatch on the next business day.

In Estonia, orders usually arrive within 1–3 business days. Delivery times to Latvia and Lithuania are generally similar. For Finland and Sweden, delivery may take 1–2 business days longer, depending on the transport partner.

In Tartu and within the Tartu area, personal delivery of the device may be possible by agreement. To check this option, please contact us before placing the order.

The exact delivery time and available delivery options are shown in the cart and checkout before confirming the order.

Can I pay in instalments?

Yes. For eligible products, instalment payment options can be selected from the available payment methods at checkout.

The instalment terms, monthly payment amount and credit decision are shown in the payment partner’s environment before confirming the agreement.

The credit decision is made by the payment partner, and Technocircle cannot guarantee instalment payment approval in advance.

All available payment methods are shown in the cart and checkout before confirming the order.

Can I get additional photos or exact battery data for a specific device before buying?

All devices shown on our website have already been technically tested and are located in a logistics warehouse. Therefore, before purchase, we are not able to provide additional photos of a specific individual device, exact battery cycle counts or other device-specific information that is not shown on the product page.

The product page shows all important information available for the device: model, storage, colour, condition grade, technical specifications, battery information and other product-specific details.

We describe the cosmetic condition of devices cautiously so that customer expectations are realistic. The exact appearance may vary slightly between devices within the same condition grade.

We are also working on a photo library to provide customers with more real-life examples of different cosmetic grades in the future.

Does Technocircle have a physical store?

Technocircle operates as an online store, and we do not have a physical store or showroom where devices can be viewed before purchase.

The online store model helps us keep operating costs lower, because maintaining a physical store adds costs that are ultimately reflected in product prices. Our goal is to offer the best possible balance between price and quality.

All devices shown on the website have already been technically tested and are located in a logistics warehouse. Orders are placed through the online store, and the device is sent to the customer using the selected delivery method.

We are constantly working to make our online store as user-friendly, clear and trustworthy as possible. You can read more about Technocircle on our About us page.

Didn’t find an answer to your question?

If your question was not answered, please contact us by email or phone.

Email: [email protected]
Languages: Estonian, English, Russian, Latvian, Lithuanian, Finnish and Swedish

Phone: +372 502 2230
Languages: Estonian and English

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More than 5,000 units in A & B condition available
More than 5,000 units in A & B condition available
A diverse range of products for both private and business customers.
Easy returns.
Easy returns.
Customer service that ensures easy returns.
Satisfied customers.
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