Category 4: Computers

Typical items in this category

• computers rated for extreme temperatures or radiation
• high-performance computers

What decides: Environmental rating (temperature, radiation) and processing performance. A product is only listed if it meets the exact description and values of an entry.

How entries are numbered

Entries in this category start with 4, followed by a letter:

• 4A — Systems, equipment and components
• 4B — Test, inspection and production equipment
• 4C — Materials
• 4D — Software
• 4E — Technology

How control numbers are built →

Related high-priority goods

Product groups on the EU high-priority list where specialised types may fall under this category. The sanctions apply to them by HS code either way.

• Computer processing and other units →

All categories

1. 0Nuclear materials, facilities and equipment
2. 1Special materials and related equipment
3. 2Materials processing
4. 3Electronics
5. 4Computers
6. 5Telecommunications and information security
7. 6Sensors and lasers
8. 7Navigation and avionics
9. 8Marine
10. 9Aerospace and propulsion

Sources

1. [1]European Union: Regulation (EU) 2021/821 — EU dual-use regulation, Annex I (as amended by Delegated Regulation 2025/2003) (Annex I in force 15 Nov 2025).
2. [2]Swiss Federal Council: Goods Control Ordinance (GKV), SR 946.202.1 — Annex 2 (dual-use goods) (status 1 Jul 2026).
3. [3]Export Control Joint Unit (UK): UK Strategic Export Control Lists — consolidated list of strategic military and dual-use items (16 Dec 2025).
4. [4]Bureau of Industry and Security (US): Classify your item (ECCN, Commerce Control List, EAR99).