Lenovo
Lenovo ThinkCentre M75n Nano
The M75n is Lenovo's 0.35-liter Nano, about half the footprint of a Tiny. It uses mobile Ryzen PRO 3300U or 3500U chips with Vega graphics, and 8 GB of soldered DDR4 that cannot be upgraded. In return for the size you get two M.2 SSD slots (a 2280 x4 slot and a 2242 x2 slot) but no 2.5-inch bay. Ports are 10 Gbps USB-A and USB-C front and rear, two USB 2.0, a DisplayPort, and a rear USB-C that carries video and can also power the machine. It has a fan. ServeTheHome measured about 8 W idle and 42 W max with the 3300U, but felt the fixed 8 GB and port mix make it a niche pick. It suits a silent-ish DNS, Home Assistant or thin-client role, not virtualization.
Good for
Badges come from the spec rules on each use page, not from guesswork.
Specs that matter used
- CPU generation
- AMD Ryzen 2000/3000 APUs (Raven Ridge / Picasso)
- CPU options
- AMD Ryzen 3 PRO 3300U, AMD Ryzen 5 PRO 3500U
- Form factor
- Ultra-compact
- Memory
- 8 GB DDR4-2400 soldered (dual-channel), not upgradable, 0 slots
- Max RAM (official)
- 8 GB
- Storage
- 2x M.2 SSD slots: one 2280 at PCIe 3.0 x4, one 2242 at PCIe 3.0 x2 (STH: the second slot also takes SATA). No 2.5-inch bay.
- Ethernet
- 1 × 1 GbE (Realtek RTL8111FP-CG; AMD DASH 1.1/1.2.)
- Wi-Fi
- M.2 Wi-Fi card slot; card optional (Wi-Fi 5 and Wi-Fi 6 options).
- vPro / AMT
- Yes (Intel AMT)
- Cooling
- Fan-cooled
- Power adapter
- 65 W Lenovo adapter; the rear USB-C port also accepts power-in (20 V, over 45 W).
- Measured idle draw
- 8 W (ServeTheHome, Ryzen 3 PRO 3300U, 8 GB soldered, 128 GB NVMe: 'around 8W' idle, about 42 W max.; source)
- Windows 11
- Depends on the CPU option (check the exact CPU)
Spec sources
- https://psref.lenovo.com/syspool/Sys/PDF/ThinkCentre/ThinkCentre_M75n/ThinkCentre_M75n_Spec.PDF
- https://psref.lenovo.com/syspool/Sys/PDF/ThinkCentre/ThinkCentre_M75n_IoT/ThinkCentre_M75n_IoT_Spec.PDF
- https://www.servethehome.com/lenovo-thinkcentre-m75n-nano-review-amd-ryzen-nano-pc/
- https://www.servethehome.com/lenovo-thinkcentre-m75n-nano-review-amd-ryzen-nano-pc/2/
- https://www.servethehome.com/lenovo-thinkcentre-m75n-nano-review-amd-ryzen-nano-pc/3/
- https://www.servethehome.com/lenovo-thinkcentre-m75n-iot-fanless-edge-device-with-6w-amd-cpu/
- https://learn.microsoft.com/en-us/windows-hardware/design/minimum/supported/windows-11-supported-amd-processors
Check before you buy
- Accept that RAM is 8 GB soldered with no slots; it cannot be upgraded, so skip it for VMs or many containers.
- Don't confuse it with the M75n IoT: that is a fanless 0.55 L model with an Athlon Silver 3050e and only 4 GB of soldered RAM.
- Only one M.2 slot runs at PCIe x4 (Lenovo lists 2280 drives for it); the second is PCIe x2 and Lenovo lists only 2242 drives for it, so plan the main drive for the x4 slot.
- Make sure a 65 W adapter or a capable USB-C supply (20 V, over 45 W) comes with it.
- Off-lease units can arrive with a BIOS administrator (supervisor) password still set; confirm you can enter BIOS setup before the return window closes.
General off-lease checks (BIOS passwords, Computrace, missing drive caddies) are in the used mini PC buying checklist.
On eBay
Find a Lenovo ThinkCentre M75n Nano
Search eBay for “ThinkCentre M75n -IoT”. Off-lease units are listed in batches, often with the RAM, drive and power adapter in the title, so compare those before price. Use the checks on this page before you buy.
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