## Common ground
Both options are types of computer cabinets—metal enclosures designed to house and organize computer equipment.
## Options at a glance
**8537.20 – Equipped with electrical control/distribution**
- **Defining trait:** Contains built-in electrical components for power distribution or control (e.g., circuit breakers, power strips, switches).
- **Typical examples:** Server racks with integrated PDU (power distribution unit), network cabinets with surge protection.
- **Best fit when:** The cabinet includes internal wiring, outlets, or control devices for managing electricity.
**9403.10 – Floor-standing, unequipped steel storage rack**
- **Defining trait:** Pure storage structure without electrical components; used solely for physical organization.
- **Typical examples:** Open steel racks for servers, empty data center cabinets, cable management frames.
- **Best fit when:** The cabinet is just a frame or shelf with no power-related functions.
## Key differences
| Feature | 8537.20 (Equipped) | 9403.10 (Unequipped) |
|--------------------------|---------------------------|------------------------------|
| Electrical function | Yes (integrated control/distribution) | No |
| Internal wiring or outlets | Present | Absent |
| Primary purpose | Power and device management | Physical storage only |
## How to choose
- Does the cabinet include power outlets, switches, or circuit breakers? → 8537.20
- Is it just a bare metal frame for holding equipment with no electrical features? → 9403.10
## Overlaps & pitfalls
A cabinet may have both features (e.g., steel frame with built-in power strip), but the **main function** determines classification. If electrical control is central, use 8537.20; if it’s purely structural, use 9403.10. The term "equipped" in 8537.20 implies active electrical functionality—do not assume it applies to simple mounting brackets or cable trays