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Mini PCIe Connector

Mini PCIe (PCI Express Mini Card) is a 52-pin connector for laptop expansion cards including Wi-Fi, Bluetooth, cellular modems, and SSDs (mSATA). Used from 2005 to present in laptops and embedded systems.

// Specifications
Standard
PCI Express Mini Card specification
Pin Count
52
Interfaces
PCIe x1 USB 2.0 SATA SIM
Form Factor
Full size and half size
Use Case
Laptop Wi-Fi cards modems SSDs
Status
Still used, being replaced by M.2
// Pin Reference Table
Pin Name Function Type
1 WAKE# Wake from sleep I/O
2 3.3V 3.3V power PWR
3 COEX1 Bluetooth coexistence I/O
4 GND Ground GND
7 CLKREQ# Clock request I/O
8 UIM_PWR SIM card power PWR
11 REFCLK- Reference clock negative BUS
12 UIM_DATA SIM data BUS
13 REFCLK+ Reference clock positive BUS
20 USB D- USB 2.0 data negative BUS
21 USB D+ USB 2.0 data positive BUS
23 PERST# PCIe reset I/O
25 PETXP PCIe TX positive BUS
26 PETXN PCIe TX negative BUS
31 PERXP PCIe RX positive BUS
32 PERXN PCIe RX negative BUS