Hi David,
In regard to the Arduino specs the Nano is always 5V. The display is in regard to the seller 5V capable.
As labeled on my display module, the connections are
SCK - Arduino Pin 13
SDO(MISO) - Arduino Pin 12
SDI(MOSI) - Arduino Pin 11
CS - Arduino Pin 10
D/C - Arduino Pin 9
RESET (Display) - Arduino Pin 8
LED - Pin 6 (with PWM driven)
VCC - 5V
GND - GND
See pictures.
