UDOO X86 features two M.2 connectors on the bottom of the board.
M.2 SATA/PCI-e Slot: Socket 2 Key B type 2242/3042/2260
The mass storage capabilities of the UDOO X86 are completed by an M.2 SSD Slot, which allow plugging M.2 Socket 2 Key B Solid State Drives with SATA interface or PCI-e x2 interface (PCI-e x1 is also supported).
The connector used for the M.2 SATA/PCI-e slot is CN20, which is a standard 75 pin M.2 Key B connector, type LOTES p/n APCI0087-P001A, H=8.5mm.
On the UDOO X86 board there is also a Threaded Spacer which allows the placement of M.2 Socket 2 Key B SATA/PCI-e modules in 2260 size.
You can find officials M.2 SSD Transcend MTS600 in the UDOO Shop compatible with this connector.
It is possible to place also modules in 2242 or 3042 size, by using a M/F Spacer which allows fixing the M.2 module on the spacer already available on the PCB, deemed for the fixing of the M.2 Key E.
The PCI-e x2 interface can be used also for different purposes other than SSD modules, but it is important that the CONFIG_1 signal is driven properly (it can be left unconnected on PCI-e based modules, due to the presence of the pull-up resistor on the platform).
M.2 Connectivity Slot: Socket 1 Key E Type 2230
It is possible to increase the connectivity of the UDOO X86 board by using M.2 Socket 1 Key E connectivity modules (i.e. modules with functionalities like WiFi + Bluetooth).
The connector used for the M.2 Connectivity slot is CN19, which is a standard 75 pin M.2 Key E connector, type LOTES p/n APCI0076-P001A, H=4.2mm, with the pinout shown in the table on the left.
On the UDOO X86 board there is also a Threaded Spacer which allows the placement of M.2 Socket 1 Key E connectivity modules in 2230 size.
You can find the official M.2 Wi-Fi Intel dual band ac Wi-Fi + BT 4.2 5ghz + adhesive antenna in the UDOO Shop compatible with this connector.