How to check a used mini PC listing before you buy
Updated 2026-09-25
Refurbished office mini PCs are cheap because they come by the pallet. Listings are often vague, so the same model can be a bargain or a dud depending on what is actually in the box. Check these before you pay.
1. The exact CPU, not "Core i5"
An "EliteDesk 800 G3 Mini i5" can be a 6th-gen i5-6500T or a 7th-gen i5-7500T, and only the second hardware-decodes 4K HEVC. Look for the full model number in the title, a photo of the BIOS or System Information screen, or ask the seller.
2. RAM: how much, and in how many sticks
These machines have two SO-DIMM slots. 16 GB as 2×8 GB leaves no free slot, so upgrading to 32 GB means replacing both sticks. With memory prices high in 2026, a unit that already has 16–32 GB can be worth more than the price difference suggests.
3. Is a power adapter included?
Many ex-office lots ship without the power brick. Lenovo and HP use proprietary barrel or rectangular connectors, so budget for the correct-wattage adapter if it is missing.
4. Storage: what is included, and what is missing
- "No SSD" or "no OS" listings are common and fine if priced accordingly.
- A 2.5" drive needs the caddy and SATA cable. Units that shipped with only an M.2 SSD often lack both.
- Check how many M.2 NVMe slots the model has. The M920q vs M920x mix-up is the classic mistake.
5. BIOS and management locks
Ex-corporate machines sometimes keep a BIOS administrator password or remote-management settings. Ask the seller to confirm the BIOS is unlocked, and avoid listings that mention a locked BIOS unless you know how to deal with it.
6. Expansion parts are sold separately
PCIe risers for Lenovo Tiny models and HP Flex IO network modules are almost never included. If you need a second NIC, price the part before choosing the model.
7. Judge the price by configuration
Compare listings with the same CPU, RAM and storage, and include shipping. Asking prices vary a lot between countries. A price alert for your target price saves checking every day.