Pinouts >  Computer buses and slots connectors
52 pin mini-PCIE edge pcb connector layout
52 pin mini-PCIE edge pcb connector

PCI Express Mini Card (also known as Mini PCI Express, Mini PCIe, and Mini PCI-E) is a replacement for the Mini PCI form factor based on PCI Express. It is developed by the PCI-SIG. The host device supports both PCI Express and USB  2.0 connectivity, and each card uses whichever the designer feels most appropriate to the task. Most laptop computers built after 2005 are based on PCI Express and can have several Mini Card slots.

Top side Bottom side
1 WAKE# 2 3.3V
3 Reserved**** 4 GND
5 Reserved**** 6


9 GND 10 I/O**
11 REFCLK- 12 CLK**
13 REFCLK+ 14 RST**
15 N/C or GND 16 VPP**
Mechanical key
17 Reserved 18 GND
19 Reserved 20 Reserved***
21 GND 22 PERST#
23 PERn0 24 +3.3Vaux
25 PERp0 26 GND
27 GND 28 +1.5V
31 PETn0 32 SMB_DATA
33 PETp0 34 GND
35 GND 36 USB_D-
37 Reserved* 38 USB_D+
39 Reserved* 40 GND
41 Reserved* 42 LED_WWAN#
43 Reserved* 44 LED_WLAN#
45 Reserved* 46 LED_WPAN#
47 Reserved* 48 +1.5V
49 Reserved* 50 GND
51 Reserved* 52 +3.3V

*Reserved for future second PCI Express Lane (if needed). Pin 51 has changed to be W_DISABLE2#
**Reserved for future Subscriber Identity Module (SIM) interface (if needed)
***Reserved for future wireless disable signal (if needed)
****Reserved for future wireless coexistence control interface (if needed)

According to 27 reports in our database (20 positive and 2 negative) the PCI Express Mini Card (Mini PCIe) pinout should be correct.

Is this pinout
PCI Express Mini Card (Mini PCIe) visual pinout:click to enlarge
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