# CFexpress

> standard for removable media cards

**Wikidata**: [Q30592714](https://www.wikidata.org/wiki/Q30592714)  
**Wikipedia**: [English](https://en.wikipedia.org/wiki/CFexpress)  
**Source**: https://4ort.xyz/entity/cfexpress

## Summary
CFexpress is a technical standard for removable media cards used for mass storage. Introduced in 2016 and published in 2017, it defines a drive form factor and memory card format. It is classified as a type of memory card and drive designed for data storage devices.

## Key Facts
- **Nature:** CFexpress is a technical standard, a drive form factor, and a mass storage format.
- **Hierarchy:** It is a subclass of "memory card" and "drive."
- **Inception:** The standard was conceived in 2016.
- **Publication:** The standard was formally announced and published in 2017.
- **Variants:** Visual documentation confirms the existence of Type A and Type B card variants.
- **Design:** The standard functions as a removable media card format.
- **Identifiers:** Google Knowledge Graph ID: `/g/11dxbds3w1`.
- **Ontology:** It falls under the broader class of "disk drive" (a computer drive that records data).

## FAQs
### Q: What is CFexpress?
A: CFexpress is a technical standard and drive form factor used for removable memory cards. It serves as a mass storage device standard.

### Q: When was the CFexpress standard released?
A: The standard was inceptioned in 2016 and was formally announced and published in 2017.

### Q: What types of CFexpress cards exist?
A: Based on available records, the standard includes at least Type A and Type B form factors.

## Why It Matters
CFexpress represents a significant evolution in the classification of storage media, bridging the gap between traditional memory cards and broader drive architectures. As a technical standard established in 2017, it provides a formalized structure for removable media cards, categorizing them explicitly under "mass storage" and "drive" classifications.

The standard matters because it defines the physical and operational specifications for high-performance removable media. By existing as a distinct "drive form factor," it enables the development of storage devices that function as components of larger data storage systems. The existence of specific types, such as Type A and Type B, indicates a versatile standard designed to accommodate different physical sizes and pin configurations (such as the contact pins visible on Type B cards), ensuring interoperability and technological advancement within the hardware ecosystem.

## Notable For
- **Standardization:** Being a distinct technical standard for removable media cards published in 2017.
- **Dual Classification:** Being uniquely classified as both a "memory card" and a "drive" (or "drive form factor").
- **Form Variants:** Distinguishing between Type A and Type B physical formats.
- **Rapid Adoption Timeline:** Moving from inception (2016) to publication (2017) within a year.
- **Broad Language Support:** Having dedicated Wikipedia entries across multiple languages including English, German, Japanese, Korean, Russian, and Chinese.

## Body

### Definition and Classification
CFexpress is defined as a technical standard for removable media cards. Within the hierarchy of data storage, it is considered a subclass of both **memory card** and **drive**. It falls under the broader class of **disk drive** (computer drives that record data) and **drive** (data storage devices containing recording media). It is explicitly categorized as an instance of "technical standard," "mass storage," and "drive form factor."

### History and Timeline
The development and formalization of CFexpress occurred rapidly in the mid-2010s:
- **2016:** The concept for the standard was inceptioned.
- **2017:** The standard was formally announced and published.

### Form Factors and Design
The standard specifies different physical form factors for its implementation.
- **Type A:** Visual evidence confirms the existence of Type A cards.
- **Type B:** Visual evidence confirms the existence of Type B cards, which feature distinct contact pins on the front side.

### Data and Identifiers
- **Google Knowledge Graph ID:** `/g/11dxbds3w1`
- **Wikidata Description:** "standard for removable media cards"
- **Wikipedia Presence:** The entity has sitelinks across 7+ language editions, including Commons, German (de), English (en), Japanese (ja), Korean (ko), Russian (ru), and Chinese (zh).