// PCB Board Connectors

PCIe x4 Slot 64-Pin

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 cards, 10GbE NICs, and high-speed USB controllers.

// Specifications

Standard

PCI Express specification

Pin Count

64 (32 per side)

Lanes

4 PCIe lanes

Bandwidth

2 GB/s PCIe 2.0 per direction

Use Case

M.2 adapters, 10GbE NICs, NVMe add-in cards

Note

Physically accepts x1 and x4 cards

// Pin Reference Table

Pin	Name	Function	Type
1	PRSNT1#	Presence detect	I/O
2	12V	12V supply	PWR
4	GND	Ground	GND
11	PERST#	PCIe reset	I/O
17-24	TX Lanes 0-3	PCIe TX differential pairs	BUS
32-39	RX Lanes 0-3	PCIe RX differential pairs	BUS
64	PRSNT2#	Presence detect	I/O