Mini PCIe (PCI Express Mini Card) is a 52-pin connector for laptop expansion cards including Wi-Fi, Bluetooth, cellular

mSATA (mini-SATA) uses the same physical connector as Mini PCIe but carries SATA signals for solid state drives. Used in

M.2 E-Key slot has the key notch at pins 24-25 providing PCIe x1, USB 2.0, and Intel CNVi (Connectivity Integration) sig

M.2 B-Key slot has the key notch at pins 12-13 providing SATA, USB 3.0, and PCIe x2 interfaces. Used for SATA SSDs, cell

M.2 A-Key is a 2230 or 2242 form factor slot for Wi-Fi and Bluetooth combo modules. The A-key notch is at pin 8-9 positi

PCIe x8 provides eight lanes for 4 GB/s (PCIe 2.0) or 8 GB/s (PCIe 3.0). Used for high-end network cards, RAID controlle

PCIe x4 provides four lanes for 2 GB/s (PCIe 2.0) or 4 GB/s (PCIe 3.0) of bandwidth. Used for M.2 adapters, NVMe add-in

PCIe x1 is the smallest PCIe slot with one lane providing 500 MB/s (PCIe 2.0), 985 MB/s (PCIe 3.0), or 1969 MB/s (PCIe 4

AMR (Audio/Modem Riser) is a 46-pin slot on Intel motherboards providing AC97 audio and modem codec connections via a ri

AGP (Accelerated Graphics Port) is a 32-bit dedicated graphics bus at 66 MHz providing 1x/2x/4x/8x modes up to 2132 MB/s