set_property PACKAGE_PIN H5  [get_ports o]
set_property PACKAGE_PIN J5  [get_ports o2]
set_property PACKAGE_PIN T9  [get_ports o3]
set_property PACKAGE_PIN T10 [get_ports o4]

set_property IOSTANDARD LVCMOS33 [get_ports o]
set_property IOSTANDARD LVCMOS33 [get_ports o2]
set_property IOSTANDARD LVCMOS33 [get_ports o3]
set_property IOSTANDARD LVCMOS33 [get_ports o4]