But, 0xB0 is a code that puts a non-friendly character on the Serial Monitor. Serial Monitor is a human-friendly display unit, and it always expects characters/codes within ASCII boundary. Therefore, we have to execute the following codes to see exactly B0 on the Serial Monitor.
byte x1 = 0xB0;
byte x2 = (x1 >> 4) + 0x37;
x1 = (x1 & 0x0F) + 0x30;
Serial.write(x2);
Serial.write(x1);