Storage

SATA

Serial ATA / Serial Advanced Technology Attachment

SATA	Speed
SATA 3.0	600MB/s
SATA 2.0	300MB/s
SATA 1.0	150MB/s

eSATA

External SATA

• Uncommon

mSATA

mini-SATA

• Obsolete
• 外型與 Mini PCI-E 完全相同，但不相容
• Use Mini PCI-E layout and connector, but not compatible
• Usually use in laptop
• Replaced by M.2

PATA

Parallel ATA / IDE

• Obsolete

M.2

AKA NGFF (Next Generation Form Factor)

• Replace mSATA
• M.2 provide PCIe x4, SATA 3.0, USB 3.0 computer bus
• Support NVMe
• If connect SATA SSD to NVMe M.2, that will not work

Ref: 如何区分 M.2 卡之间的差异

Key	Size	Interface	Common use
A	1630, 2230, 3030	PCIe x2 / USB 2.0 / I2C / Display Port (DP) x4	WiFi / BlueTooth / Cellular
B	2230, 2242, 2260, 2280, 3042, 22110	PCle x2 / USB 2.0 / USB 3.0 / Audio / PCM / IUM / SSIC / I2C	SATA / PCIe x2 / SSD
E	1630, 2230, 3030	PCIe x2 / USB 2.0 / I2C / SDIO / UART / PCM	WiFi / BlueTooth / Cellular
M	2230, 2242, 2260, 2280, 22110	PCIe x4 / SATA	PCIe x4 / SSD (NVMe)
B+M			SATA SSD

M.2 Key

M.2 size

	Length (mm)	Popular
Width	12, 16, 22, 30	22
Length	16, 26, 30, 38, 42, 60, 80, 110	30, 42, 60, 80, 110

Size code

<width><length>

2230
2242
2280
...

NVMe

NVM Express / Non-Volatile Memory Express

• Interface specification for NVM
• Replace SATA for NVM
• NVMe SSD has many form factors / interface:
  • M.2
    • Most popular
  • AIC (add-in card), PCIe
  • U.2
  • U.3