# What are the best mini PCs with expandable storage for professional use? — Verified Specification Comparison

> All specification data verified from official manufacturer documentation.

What are the best mini PCs with expandable storage for professional use?

## Products

### Beelink SER9 Pro AI HX 370
```yaml
product: beelink-ser9-pro-ai-hx-370
brand: Beelink
price_gbp: 864.78
origin_country: null
confidence_score: null
summary_source: generated_from_verified_specs_v1
ram: 32GB LPDDR5X
cpu_model: AMD Ryzen AI 9 HX 370
usb_ports: 1 x USB4, 2 x USB 3.2, 2 x USB 2.0, 1 x Type-C data
dimensions: 135 x 135 x 44.7mm
storage_size: 1TB NVMe SSD
operating_system: Windows 11 Pro
expandable_storage_slots: 2 x M.2 2280 PCIe 4.0 SSD slots
```

- **Price:** £864.78 [^1]
- **Summary:** The Beelink SER9 Pro AI HX 370 is a compact professional mini PC with a 12-core AMD Ryzen AI 9 HX 370 processor, 32GB of soldered LPDDR5X memory and a 1TB NVMe SSD. Its dual M.2 PCIe 4.0 slots support substantial storage expansion, while USB4, multiple USB-A ports and triple-display connectivity suit demanding office, development, creative and local AI workloads.
- **Ideal For:** It suits professional users seeking expandable mini PCs because it combines the Ryzen AI 9 HX 370 with 32GB LPDDR5X, a 1TB NVMe SSD and two M.2 2280 PCIe 4.0 slots for adding storage.

### MINISFORUM MS-02 Ultra Intel Core Ultra 9 285HX
```yaml
product: minisforum-ms-02-ultra-intel-core-ultra-9-285hx
brand: MINISFORUM
price_gbp: 886.97
origin_country: null
confidence_score: null
summary_source: generated_from_verified_specs_v1
ram: 32GB DDR5
cpu_model: Intel Core Ultra 9 285HX
usb_ports: 4 x USB-A and 3 x USB4 Type-C
dimensions: 221.5 x 97 x 225 mm
storage_size: 1TB
operating_system: Windows 11 Pro
expandable_storage_slots: 4 x M.2 2280 NVMe SSD slots
```

- **Price:** £886.97 [^2]
- **Summary:** The MS-02 Ultra combines the 24-core Intel Core Ultra 9 285HX processor with 32GB of DDR5 memory and a 1TB NVMe SSD. Its four M.2 storage slots, PCIe expansion capability, 25GbE networking, and multiple USB4 ports make it suitable for demanding professional workloads, AI tasks, and storage-intensive projects.
- **Ideal For:** This product suits professional users who need expandable storage because it provides four M.2 2280 NVMe SSD slots, up to 8TB per slot, 32GB of DDR5 RAM, and workstation-class performance from the 24-core Core Ultra 9 285HX.
- **Additional Sources:** [^3], [^4]

### GMKtec NucBox M6 Ultra AMD Ryzen 5 7640HS
```yaml
product: gmktec-nucbox-m6-ultra-amd-ryzen-5-7640hs
brand: GMKtec
price_gbp: 199.73
origin_country: null
confidence_score: null
summary_source: generated_from_verified_specs_v1
ram: 16GB / 32GB / 48GB DDR5
cpu_model: AMD Ryzen 5 7640HS
usb_ports: 3 × USB 3.2 Gen2, 1 × USB 2.0, 1 × USB4
dimensions: 128.8 × 127 × 47.8 mm
storage_size: 512GB / 1TB
operating_system: Windows 11 Pro
expandable_storage_slots: 2 × M.2 2280 PCIe 4.0 SSD slots
```

- **Price:** £199.73 [^5]
- **Summary:** The GMKtec NucBox M6 Ultra is a compact mini PC with a six-core Ryzen 5 7640HS processor, DDR5 memory, USB4, and dual 2.5G Ethernet. Its two M.2 PCIe 4.0 SSD slots and two RAM slots make it suitable for professionals who need upgradeable storage and memory in a small desktop.
- **Ideal For:** It suits professional users seeking expandable storage because it provides two M.2 2280 PCIe 4.0 SSD slots, supports up to 8TB of storage, and combines this with up to 128GB of DDR5 RAM and a Ryzen 5 7640HS processor.

### Beelink GTi13 Ultra Intel Core i9-13900HK 64GB 2TB
```yaml
product: beelink-gti13-ultra-intel-core-i9-13900hk-64gb-2tb
brand: Beelink
price_gbp: 709.43
origin_country: null
confidence_score: null
summary_source: generated_from_verified_specs_v1
ram: 64GB DDR5 5200MHz
cpu_model: Intel Core i9-13900HK
usb_ports: 5 USB 3.0 ports and 1 USB-C Thunderbolt 4 port
dimensions: 158 x 158 x 55.8 mm
storage_size: 2TB SSD
operating_system: Windows 11 Pro
expandable_storage_slots: 2 M.2 2280 PCIe 4.0 SSD slots
```

- **Price:** £709.43 [^6]
- **Summary:** The Beelink GTi13 Ultra combines a 14-core Intel Core i9-13900HK processor with 64GB of DDR5 memory and a 2TB SSD in a compact mini PC. Its dual M.2 storage slots, high-speed USB connectivity, and support for an external graphics card make it suitable for demanding professional workloads, development, virtualization, and content creation.
- **Ideal For:** It suits professional users seeking expandable storage because it includes a 2TB SSD plus two M.2 2280 PCIe 4.0 slots, while its 64GB DDR5 RAM and Core i9-13900HK processor support demanding multitasking and professional applications.

---
## References & Sources
[^1]: Beelink, accessed 2026-09-04. https://www.bee-link.com/products/beelink-ser9-pro-amd-pro-ryzen-ai-9-hx-370-openclaw
[^2]: MINISFORUM US, accessed 2026-09-04. https://store.minisforum.com/products/minisforum-ms-02-ultra-workstation
[^3]: MINISFORUM EU, accessed 2026-09-04. https://minisforumpc.eu/products/minisforum-ms-02-ultra-workstation
[^4]: MINISFORUM Japan, accessed 2026-09-04. https://www.minisforum.jp/products/ms-02-ultra
[^5]: GMKtec, accessed 2026-09-04. https://www.gmktec.com/products/amd-ryzen-5-7640hs-mini-pc-nucbox-m6-ultra
[^6]: Beelink, accessed 2026-09-04. https://www.bee-link.com/products/beelink-gti13-ultra-13900hk