Slot Connectors (Pcie, Mpcie, Msata, Pci); Pcie Connectors; Pci-Express X16 Connector (Pciex16) (Slot1_16X) - Kontron KTH81/mITX User Manual

KTD-N0882-I
8

Slot Connectors (PCIe, mPCIe, mSATA, PCI)

PCIe Connectors

8.1
The mITX boards supports one PCIex16 (16-lanes), one miniPCIe and one mSATA in mPCIe slot.
The Flex boards supports one PCIex16 (16-lanes), one PCIex2 (2-lanes) in a x16 slot and one PCIex1 slot.
The PCIex16 port can be used for external PCI Express cards inclusive graphics card. (On the Flex boards it
is located nearest the CPU). Maximum theoretical bandwidth depends on the chipset, Q87 / H81 support up
to PCIe 3.0 / PCIe 2.0, so Q87 support 8 Gbps effectively for each lane and direction, 256 Gbps in total for
16 lanes, while the H81 support 4 Gbps effectively for each lane and direction, 128 Gbps in total for 16
lanes.
The PCIex2 (in a x16 slot) (only on Flex board) can be used for external PCI Express cards inclusive graphics
card. It is located fares away from CPU. Maximum theoretical bandwidth is 4 Gbps effectively for each lane
and direction, 16 Gbps in total for 2 lanes.
The PCIex1 (only on Flex board) can be used for external PCI Express cards inclusive graphics card.
Maximum theoretical bandwidth is 4 Gbps effectively for each direction, 8 Gbps in total.
One miniPCIe (PCIe 2.0) port (mITX boards only) supporting mPCIe cards.
One miniPCIe (mSATA) port (mITX boards only) supporting mSATA cards.
miniPCIe slots are equipped with one USB 2.0 port. The USB connected to the mSATA slot do not support
WAKE function.

PCI-Express x16 Connector (PCIex16) (SLOT1_16X)

Note Type
PEG_TXP[0]
PEG_TXN[0]
PEG_TXP[1]
PEG_TXN[1]
Page 56
Signal PIN
+12V B1
+12V B2
+12V B3
GND B4
SMB_CLK B5
SMB_DATA B6
GND B7
+3V3 B8
NC B9
SB3V3 B10
WAKE# B11
NC B12
GND B13
B14
B15
GND B16
CLKREQ B17
GND B18
B19
B20
GND B21
GND B22
KTQ87/KTH81 Users Guide
Signal
A1 NC
A2 +12V
A3 +12V
A4 GND
A5 NC
A6 NC
A7 NC
A8 NC
A9 +3V3
A10 +3V3
A11 RST#
A12 GND
A13 PCIE_x16 CLK
A14 PCIE_x16 CLK#
A15 GND
A16 PEG_RXP[0]
A17 PEG_RXN[0]
A18 GND
A19 NC
A20 GND
A21 PEG_RXP[1]
A22 PEG_RXN[1]
Slot Connectors
Type Note