User's Manual

● Two M.2 2280 or M.2 2230 solid-state drive
● Supports RAID 0 and RAID 1
The primary drive of your computer varies with the storage configuration. For computers:
● With 2 M.2 drives SSD1 is the primary drive
Table 11. Storage specifications
Storage type Interface type Capacity
Up to two M.2 2230 or 2280 solid-state drive PCIe Gen3.0x4 NVMe, up to 32 Gbps Up to 2 TB
Media-card reader
Table 12. Media-card reader specifications
Description Values
Type
One SD 3.0/4.0/6.0 card slot
Cards supported
● Secure Digital (SD)
● Secure Digital High Capacity (SDHC)
● Secure Digital eXtended Capacity (SDXC)
Keyboard
The following table lists the keyboard specifications of your Precision 5550.
Table 13. Keyboard specifications
Description Values
Keyboard type
Backlit keyboard
Keyboard layout
QWERTY
Number of keys
● United States and Canada: 79 keys
● United Kingdom: 80 keys
● Japan: 83 keys
Keyboard size
X=19.05 mm key pitch
Y=18.05 mm key pitch
Keyboard shortcuts
Some keys on your keyboard have two symbols on them.
These keys can be used to type alternate characters or to
perform secondary functions. To type the alternate character,
press Shift and the desired key. To perform secondary
functions, press Fn and the desired key.
NOTE: You can define the primary behavior of the
function keys (F1–F12) changing Function Key Behavior
in BIOS setup program.
Keyboard shortcuts
12 Specifications of Precision 5550