Difference between USDM and JDM Ecu...?

Okay...so I need a ECU but I need the USDM one. It's for a 95 Integra LS 5-speed, so far I know it's suppose to be P75 A01...but where on the bar code with the serial number can tell me if it's JDM or USDM. I bought one that says 37820-P75-A01...830-112029 AW; is this ECU USDM? Thanks Guys