Editing USB flash drive (section)

===Additional components===
The typical device may also include:

[[File:USB flash drive2.jpg|thumb|The front and rear side of a USB flash drive with the casing removed]]

* [[Jumper (computing)|Jumpers]] and test pins – for testing during the flash drive's manufacturing or loading code into its [[microcontroller]].
* [[light-emitting diode|LEDs]] – indicate data transfers or data reads and writes.
* [[write protection|Write-protect]] switches – Enable or disable writing of data into memory.
* Unpopulated space – provides space to include a second memory chip. Having this second space allows the manufacturer to use a single printed circuit board for more than one storage size device.
* USB connector cover or cap – reduces the risk of damage, prevents the entry of dirt or other contaminants, and improves overall device appearance. Some flash drives use retractable USB connectors instead. Others have a swivel arrangement so that the connector can be protected without removing anything.
* Transport aid – the cap or the body often contains a hole suitable for connection to a [[key chain]] or [[lanyard]]. Connecting the cap, rather than the body, can allow the drive itself to be lost.
* Some drives offer expandable storage via an internal [[memory card]] slot, much like a memory [[card reader]].<ref>[http://www.ces-show.com/2006/review/pny/pny_usb_flash_drive.html PNY USB Flash Drive – CES 2006 – LetsGoDigital] {{Webarchive|url=https://web.archive.org/web/20090911085053/http://www.ces-show.com/2006/review/pny/pny_usb_flash_drive.html |date=2009-09-11 }}. Ces-show.com. Retrieved on 2011-05-18.</ref><ref>[http://www.techchee.com/2008/05/20/bluetrek-bizz-an-expandable-usb-drive-and-a-bluetooth-headset-in-one/ BlueTrek Bizz – an expandable USB  and a Bluetooth headset in one] {{Webarchive|url=https://web.archive.org/web/20140829094528/http://www.techchee.com/2008/05/20/bluetrek-bizz-an-expandable-usb-drive-and-a-bluetooth-headset-in-one/ |date=2014-08-29 }}. TechChee.com (2008-05-20). Retrieved on 2011-05-18.</ref>