Internal storage drives are devices that your computer uses to read and store data. You can add drives to your computer to increase storage capacity and enable your computer to read other types of media. Internal storage drives are installed in bays.
When you install or replace an internal storage drive, note the type and size of the drive that each bay supports and correctly connect the required cables. Refer to the appropriate section in Removing and installing hardware for instructions on how to install or replace internal storage drives for your computer.
| 1 Primary flex bay | 2 Secondary flex bay (available on some models) |
| 3 SD card slot | 4 Secondary storage drive bay |
| 5 Primary storage drive bay | 6 PCIe card slots (4) |
| 7 M.2 solid-state drive slots (2) |
1 2 Flex bays (2)
Flex module
Depending on your computer model, the following parts might be preinstalled in the flex module:15-in-1 card reader
External Serial Advanced Technology Attachment (eSATA) connector
Four-digit diagnostics display
Institute of Electrical and Electronics Engineers (IEEE) 1394 connector
Slim optical drive
Front Thunderbolt adapter kit
USB-C connector
Front-access storage enclosure
Multi-drive conversion kit
Depending on your computer model, the following parts might be preinstalled in the multi-drive conversion kit:Storage drive (such as hard disk drive, solid-state drive, or hybrid drive)
Slim optical drive
Optical drive
Slim-optical-drive adapter
3 SD card slot
An SD card is installed in some models.
4 5 Storage drive bays (2)
You can install hard disk drives, solid-state drives, or hybrid drives in the storage drive bays.
6 PCIe card slots (4)
You can install compatible PCIe cards and PCIe solid-state drives in the PCIe card slots.
7 M.2 solid-state drive slots (2)
One or two M.2 solid state drives are installed in some models.