KTQM77/mITX Users Guide
KTD-N0850-B Page 33
5.3.2 USB Connector 2/3 (USB2/3)
USB Ports 2 and 3 are mounted together with DP1 port and supports USB3.0/USB2.0.
Note Type
Signal
PIN
Signal Type Note
IO
USB3-
USB3+
IO
1
PWR
5V/SB5V
1 2 3 4
GND
PWR
IO
RX3-
5 6 7 8 9
TX3+
IO
IO
RX3+ TX3-
IO
PWR
GND
IO
USB2-
USB2+
IO
1
PWR
5V/SB5V
1 2 3 4
GND
PWR
IO
RX2-
5 6 7 8 9
TX2+
IO
IO
RX2+ TX2-
IO
PWR
GND
Note 1:
In order to meet the requirements of USB standard, the 5V input supply must be at least 5.00V.
5.3.3 USB Connector 4/5 (USB4/5)
USB Ports 4 and 5 are mounted together with ETH1 port and supports USB2.0.
Note Type Signal
PIN
Signal Type Note
1
PWR 5V/SB5V
1 2 3 4
GND PWR
IO
USB5-
USB5+
IO
1
PWR 5V/SB5V
1 2 3 4
GND PWR
IO
USB4-
USB4+
IO
Note 1:
In order to meet the requirements of USB standard, the 5V input supply must be at least 5.00V.
Signal
Description
USB2+ USB2-
RX2+ RX2-
TX2+ TX2-
USB3+ USB3-
RX3+ RX3-
TX3+ TX3-
Differential pair works as Data/Address/Command Bus.
5V/SB5V
5V supply for external devices. SB5V is supplied during powerdown to allow
wakeup on USB device activity. Protected by resettable 2A fuse covering both USB
ports.
Signal
Description
USB4+ USB4-
USB5+ USB5-
Differential pair works as Data/Address/Command Bus.
5V/SB5V
5V supply for external devices. SB5V is supplied during powerdown to allow wakeup
on USB device activity. Protected by resettable 1A fuse covering both USB ports.
IO-Area Connectors
