4A004 Category 4A
Computers as follows (see List of Items Controlled) and “specially designed” related equipment, “electronic assemblies” and “components” therefor.
Category 4: Computers
Reasons for control
- NS: National security
- RS: Regional stability
- AT: Anti-terrorism
Country chart
| Control | Column |
|---|---|
| AT applies to entire entry | AT 1 |
| NS applies to entire entry | NS 2 |
| RS applies to 4A004.z.1 | None |
| RS applies to 4A004.z.2 | None |
List-based license exceptions
| Exception | As stated in the entry |
|---|---|
| GBS | N/A NAC/ACA: Yes, for 4A004.z. AIA: Yes for 4A004.z.1 LPP: Yes for 4A004.z.1 |
| LVS | $5000, N/A for 4A004.z |
Items
- a. 'Systolic array computers';
- b. 'Neural computers';
- c. 'Optical computers'.
- d. through y. [Reserved]
- z.1. Commodities that are described in 4A004 and that also meet or exceed the performance parameters in 4A090.a; or
- z.2 Commodities that are described in 4A004 and that also meet or exceed the performance parameters in 4A090.b.
Related controls
See also ECCN 4A090.
Notes
Note: See § 740.2(a)(9)(ii) of the EAR for license exception restrictions for ECCN 4A004.z.
Technical Notes: 1. For the purposes of 4A004.a, 'systolic array computers' are computers where the flow and modification of the data is dynamically controllable at the logic gate level by the user. 2. For the purposes of 4A004.b, 'neural computers' are computational devices designed or modified to mimic the behavior of a neuron or a collection of neurons, i.e., computational devices which are distinguished by their hardware capability to modulate the weights and numbers of the interconnections of a multiplicity of computational components based on previous data. 3. For the purposes of 4A004.c, 'optical computers' are computers designed or modified to use light to represent data and whose computational logic elements are based on directly coupled optical devices.
Source: eCFR, version
2026-08-01, retrieved
2026-08-20T04:04:59+00:00.